"Stormy" the Loneliest Petrel remains in nest after Cahow roommate fledges.

For the third year in a row, a very lost and lonely Storm-petrel has been building a nest and trying to attract a mate to the Cahow Colony on Nonsuch Island.

As far as we know, this is the first time a Storm-petrel has attempted this, as although they are found offshore of the island in deeper waters, they have never been known to nest or even land on Bermuda, with their closest nesting colonies being 800 miles away on islands off the coast of Maine and Nova Scotia.

Photo: Ian Fisher

Photo: Ian Fisher

Photo: Ian Fisher

Photo: Ian Fisher

The last 2 seasons he was filmed arriving into the recently vacated CahowCam burrow a few days after the resident Cahow chick had fledged and would spend the next few weeks building a nest and calling out at night for a mate, ultimately in vain.

This year however, he arrived 2 months early and moved into the still occupied CahowCam 2 burrow which he decided to cohabitate with a very patient Cahow chick.

Much to the bewilderment of scientists and the worldwide CahowCam followers, he turned his amorous attentions to the Cahow chick despite it eventually growing to almost 10 times his weight. However the adult Cahows, when encountering the Storm-petrel in the nest during their feeding visits, did not seem to consider him as a threat to their chick and tolerated his presence.

The Nonsuch Team kept a close eye on this to be sure that the Cahow chick that was doing its best to ignore him wasn’t being negatively affected and even tried re-homing him to an empty Cahow burrow after he was caught and banded, as seen in the following video.

Despite this attempt he returned to the CahowCam 2 burrow the following night where he remained through to the Cahow chick fledging a few weeks ago.

J-P Rouja | Nonsuch Expeditions Team Leader: “There was even some talk amongst our followers to start a Go Fund Me Campaign to buy Stormy a plane ticket back to where he should be nesting. But as Jeremy pointed out, even if it had been logistically possible, the most that it would probably prove would be how fast he could actually fly back here once released.”

Ultimately his rather annoying persistence did not seem to affect the chick which put on weight faster and grew larger than most others in the colony, though this may have been in part due to the parents more frequent visits to keep an eye on Stormy.

Now back on his own, he has reverted to his old routine of nest building and calling our for a mate of his own and viewers who log on to the CahowCam around 1 AM (or scroll back in the video timeline in the AM) can watch him LIVE.

For World Oceans Day, role of Sargassum as a nursery revealed.

Whilst an over abundance of Sargassum reaching the coastline can be seen as a nuisance and even a problem, its importance as a nursery in the open ocean can not be understated.

Beyond the numerous unique species that make it their home, including Crabs, Shrimp, Nudibranchs and the diminutive yet almighty Sargasso Fish, many larger pelagic species rely on it to carry their eggs and/or protect their young including Flying Fish and Mahi-mahi a juvenile of which can be seen here:

The fauna that the mattes contain then also serves as a very important source of food for these and other pelagic species.

Jean-Pierre Rouja | Nonsuch Expeditions Team Leader, Photographer & Sargasso Sea Commission Ambassador:

“The waves of Sargassum that reached Bermuda in April were full of this fauna early in their life-cycles as documented in this series of photos.

The photo above has a gravid Sargassum Swimming Crab (of which there were numerous in those collection efforts led by Chris Flook) holding her eggs, along with strands of Flying Fish eggs that had been wrapped around the Sargasso weed (Sargassum natans) and were just about to hatch.

In this next photo a juvenile Sargassum Fish (Histrio histrio) can also be seen which whilst I was shooting was ingesting the flying fish as soon as they hatched.

At this time of year we routinely find very small Sargassum fish, often at a rate of 1 per clump of weed, however rarely do we find more than 1 per clump as invariably they will eat each other until only 1 is left…”

Cedar, the 2019 CahowCam Star has Fledged!

1:32 am June 7th 2019, our star CahowCam chick fledged out to sea with followers around the world watching in realtime. If all goes well she will return in 3 to 5 years, often times landing within yards of her original nesting burrow.

She is one of five that have fledged thus far this season from Nonsuch Colony A, with another 8 or 9 remaining. This rate is similar to the rest of the Colony where about a third have fledged, keeping us on track to a projected record number of 73 chicks that may fledge this year!

Watch Cedar, exercising, imprinting and the fledging:

Jeremy Madeiros | Senior Terrestrial Conservation Officer, The Department of the Environment and Natural Resources: 

“We are relieved to be able to see her fledge which is a satisfying conclusion to the 7 month process which started when her parents returned to Nonsuch to nest build and court last November. Whilst Cedar may have fledged, our work is not over, as there are at least two chicks that needed to be rescued due to insufficient feeding by their parents and the remainder of the chicks throughout the Colony which need to be monitored and managed until they fledge, not to mention all of the Tropicbird chicks, that have been hatching early this year… “

Deputy Premier and Minister of Home Affairs, the Hon. Walter H. Roban: 

"Following World Environment Day and in advance of World Ocean Day, I find the progress made by the Nonsuch Expeditions in collaboration with our Department of the Environment and Natural Resources Team very encouraging. As you know, our Bermuda environment is very important to me, and the preservation and protection of our island and its indigenous species remains a top priority for the Ministry of Home Affairs. We should be very proud of the efforts that have brought our cahows back from near extinction and the efforts to share this project with the World."

Jean-Pierre Rouja | Nonsuch Expeditions Team Leader:

“The LIVE viewing of last nights activities was made possible by the installation of a brand new “Above Ground” infrared capable PTZ Camera that we have just launched in conjunction with the DENR and the Cornell Lab Of Ornithology Bird Cam Team. This is now our 4th Cam, adding to CahowCams 1&2 and a new “Longtail” TropicbirdCam which is proving to be very popular.

This is a perfect example of adapting and developing technology to assist with Conservation and Educational Outreach.”

Please keep watching the LIVE CahowCam to see how Stormy, Cedar’s ever persistent roommate reacts to her departure.

A Holographic Approach to Conservation

Jean-Pierre Rouja | Nonsuch Expeditions Team Leader “As part of our efforts to produce Media and develop Technology for Conservation, we have partnered with Holographic Video producers Looking Glass Factory to help develop and test their prototype cameras in Bermuda with a goal of, for the first time ever, Livestreaming Holographic wildlife footage to the World!”

Alex Hornstein | Looking Glass Factory: “I first met JP Rouja, a Conservationist, Filmmaker and Tech Developer who runs the Nonsuch Expeditions, an organization that works to document and spread awareness of Bermuda’s unique biodiversity including the Cahows, at a show last year where I was showing off an underwater holographic camera that I had built, and was using to film large underwater animals. I’m one of the co-founders of a holographic display company called Looking Glass, and for the past nine months, I’ve been working on a number of techniques to capture digital holographic images and video of the natural world, that we can play back in our displays. Holograms present the illusion that something is there in front of you when in fact it’s not — it could be a recording, or a live scene being streamed from another part of the world. Over several months, JP and I worked out a plan to stream holographic footage of Cahows from their natural habitat on Nonsuch out into the world, where they could be viewed, life-sized, in our displays…” Read full Article on Medium…

New Nonsuch Cam launched on World Environment Day, just in time to watch Cahow Chicks fledging.

On World Environment Day a 4th LIVE Cam has been launched on Nonsuch Island as a partnership between the Nonsuch Expeditions, the Cornell Lab of Ornithology and the Department of the Environment and Natural Resources.

This new camera is located in Nonsuch Translocation Colony A, and unlike the existing nest Cams is above ground giving a view of the Island and coastline during the day and an infrared view of the Colony at night allowing scientists, students and followers from around the world to observe the Cahow chicks as they explore, exercise and imprint on their surroundings in the few nights before they fledge out to sea.

If activity in the LIVE video below has ended, you may scroll back up to 12 hours in the Timeline…

Charles Eldermire | Cornell Lab of Ornithology: 

“Watching the Cahow nestling navigate the darkness and stretch its wings on the new cam shows a whole new side to Cedar, one that reinforces how close she is to heading out to sea! Plus, the daytime views of Nonsuch Island are spectacular and I can imagine lots of viewers tuning in just to bask in the beauty and to watch the longtails fly past on the wind.”

Jeremy Madeiros | Senior Terrestrial Conservation Officer, The Department of the Environment and Natural Resources: 

“I project that Cedar, based on her weight and wing length from her most recent health check will fledge out to sea somewhere between the 4th and 8th of June, so the launch of this new Cam allowing us to witness this process is quite timely. When watching at night you will see her exercising and flapping her wings, however there are no test flights, so the first time she actually flies she will head out to sea, not to return, if all goes well, for 3 to 5 years...”

Jean-Pierre Rouja | Nonsuch Expeditions Team Leader: 

“This new camera follows our original CahowCam that we first launched 8 years ago in Cahow burrow #831. Unfortunately the egg in this nest failed this year, however this gave the parents a much needed break as they had successfully raised a chick for the past 5 years, well above the average Cahow nesting success rate.

CahowCam 2 was launched this Spring in burrow #832, in which viewers have been following the Cahow chick, recently named “Cedar” and an increasingly persistent, annoying and never before documented Storm Petrel nest-mate.

We have also recently launched a “Longtail” TropicbirdCam in which the chick hatched a month earlier than expected and is doing very well.”

The LIVE feeds and archival recordings from the Cams have resulted in over 20 million minutes of video being watched over the past 3 seasons which will only increase over the next few years with all of these new viewing options…

The Cahows are nocturnal when approaching land and nesting, therefore the majority of activity occurs at night, usually starting around 1am, however viewers of the LIVE video feeds can scroll back as far back as 12 hours in the timeline allowing them to observe all of the prior nights nocturnal activities when checking in the morning.

J-P Rouja:  

“We also have a number of Cornell volunteers and other followers across a multitude of timezones ensuring that the live feeds are always monitored in realtime and that post regular updates to our Twitter feeds. The crowd sourcing of citizen scientists to monitor 24/7 live feeds is relatively new but much welcomed phenomenon and has already helped our Team identify significant activities that we would otherwise have missed.”

Watch LIVE now:
http://www.nonsuchisland.com/live-cahow-cam
http://www.nonsuchisland.com/live-tropicbird-cam

Cahow GPS Tracking Program Phase 1

Bermuda Petrel Biomonitoring 2019

“The 2019 Cahow breeding season has been extremely eventful, and has included two separate projects involving fitting adult Cahows with advanced GPS tags to monitor their movements at sea.

The Bermuda petrel biomonitoring project is being carried out by researchers Letizia Campioni of MARE and Monica Silva of cE3c, in partnership with the Dept. of Environment and Natural Resources and the Nonsuch Expeditions. The GPS tags were deployed during the egg incubation period in January/February, and again during the chick rearing period in March/April.

Monica and Letizia have already recovered many of these tags, with the first GPS tag with track data during chick-rearing recovered on the 4thApril.

This tag was deployed on a male Cahow (band number E0171) from nest # R836 on Nonsuch Island. This particular bird is a rather special one for several reasons. I monitored him as he hatched on 6th March 2005 in the Green Island # 4 nest, and translocated him to nest no. R833 on Nonsuch Island on 27th May 2005, as part of the project to re-establish nesting Cahows on Nonsuch, where they had not nested since the 1620s. Not only was I able to watch this bird fledge successfully to sea on the night on June 6th, 2005, but it was also one of the first translocated Cahows to return to Nonsuch as an adult, three years later in 2008. It was in fact the first translocated Cahow to stay for the day in a nest burrow on Nonsuch on 19th March, 2008.

By 2011, this bird had settled in the R836 nest, and attracted a new mate (a non-translocated female fitted with band number E0401). This pair has remained together ever since, and has raised 8 chicks in 8 straight years – clearly, he is doing an awesome job as a parent!

The data from the recovered tag revealed that he flew approx. 1200 Km (700 miles) north to feed over the North American continental shelf, in the highly productive waters of Georges Bank, in the Gulf of Maine. It took him 7 days to fly to this area, gather food, and return to feed the chick. During the outbound journey, he was travelling at a speed of approx. 35Km/h, which doubled during the return trip to 70 Km/h (about 44 mph). This is typical of the multi-thousand-mile weekly feeding trips that the adults carry out over a 3-month period to provision the growing chick. A number of additional tags have been recovered since then and are starting to give a very detailed picture of Cahow foraging areas and movements at sea during their breeding season.”

Jeremy Madeiros, Senior Terrestrial Conservation Officer, Dept. of Environment and Natural Resources, BERMUDA

The results of this and future tracking exercises will be incorporated into the curriculum that we are developing. Educators should contact us or sign up to our Newsletter selecting the educator option.

Conservation Travel Writers visit Nonsuch Island.

A group of Conservation Travel writers visiting Bermuda with the Bermuda Tourism Authority joined Jeremy Madeiros and the Nonsuch Expeditions Team for a Tour of Nonsuch Island and met the latest chicks from Cahow Colony A.

CahowCam 1 egg has failed, giving much needed break to the parents.

Jeremy explains how the failure of the CahowCam 1 egg provides a much needed break for the parents that have raised a chick each of the past 5 years.

So far, the 2019 Cahow nesting season looks like it is a fairly successful one, with over 60 chicks now confirmed as having hatched, with the final number waiting for the current high winds and rain to abate so further nest checks can take place on the smaller nesting islets. 

On Nonsuch Island, it looks like a total of 12 chicks have now hatched, including the first 2 chicks ever at the new, 2nd translocation colony site. With the CahowCam nests, the recently installed "CahowCam 2" camera recorded the successful hatching of its chick on the night of 9th March. This chick seems to be getting regular feeding visits by the parent birds and is gaining weight steadily.

However, at the "CahowCam1" nest, as the hatching window passed it became clear that the egg had failed and was not going to hatch. This pair has been unusually successful, raising chicks for 5 consecutive years in a row, whereas Cahow pairs are usually only successful every other year or at best 2 years out of 3. Usually, when an egg fails, the parents will faithfully continue to try and incubate it for at least another 2 or 3 weeks, which has been the case with this pair. Typically, once a pair finally accepts that an egg will not hatch, they often will kick the egg out of the nest or, alternatively, will partly or completely bury it with nest material. This is what has happened last night (20/21 March), when the adult brought large amount of additional nest material in, ultimately completely burying the egg. This is the first time we have observed this on the CahowCam, due to the pair being successful every previous year since the camera was installed! This points to the value of these burrow cams, that even when failure inevitably occurs, that we can still gain previously unknown insights and observations that were not possible before. The adults may continue to visit the failed nest on & off until around the beginning of April, then will depart for their mid-Atlantic summer habitat, where they will feed, regain their strength, and prepare for the start of the next breeding season in November.

All the best, Jeremy

Jeremy Madeiros Senior Conservation Officer (Terrestrial) Dept. of Environment and Natural Resource

Sargasso Sea Commission visits Nonsuch Island.

On the final day of the Next Steps for Strengthening Stewardship of the Sargasso Sea workshop held at the Bermuda Institute of Ocean Sciences, thirty of the participants, including representatives from the Sargasso Sea Commission’s Signatories, Commissioners, and partners had the opportunity to take part in an excursion to Nonsuch Island with Nonsuch Expeditions. These participants had the rare opportunity to observe a scheduled nest check for two of the new Cahow chicks, as well as observe some of the species living in Sargassum. 

Hello World! 2019 CahowCam Chick hatches LIVE on Camera

At approximately 10:30pm on Saturday night, viewers from around the world watched as the Cahow egg in Burrow #832 began to hatch. Watch CahowCam LIVE Now

Nonsuch Expeditions Team Leader and CahowCam developer Jean-Pierre Rouja."The first hint that something was going on was a broken egg shell. Then, around 11:30pm, the chick’s head first appeared from under its parent. Progressively, throughout the night, more and more of it was revealed." 

Senior Terrestrial Conservation Officer Jeremy Madeiros: “We were very happy to see the chick hatching in the 2ndCahowCam nest, and a bit surprised as I was not really expecting hatching to occur for several days yet. When I returned to my records, I could see the adult had returned during a stormy period in January when I had not been able to visit Nonsuch, so the egg was laid at the beginning of this period, not the end as thought. This brings the number of Cahow chicks so far confirmed as hatching on Nonsuch to 9, with adults in 4 nests still incubating eggs. The total number of chicks confirmed on all nesting islands now is over 45, with more nest checks scheduled over the next week, weather permitting.”

The CahowCam Project is now in its seventh season broadcasting LIVE from Nonsuch Island, and the third season in collaboration with the Cornell Lab of Ornithology (with whom over 15 million minutes of CahowCam video were watched over the past two years). 

The new CahowCam 2 had just been installed in Burrow #832 only a few days prior to the hatching. It's one of several that the team is installing this season to give researchers, students, and viewers around the world fascinating insights into the nesting activities of the second rarest seabird on the planet. It is located alongside burrow #831 from which the current CahowCam continues to stream as it has for the past five years. Historically, Burrow #832 hosted the Camera for the first two CahowCam seasons (2013-2014) during which the same pair successfully reared chicks named “Backson” and “Lightning”. 

The Minister of Home Affairs the Hon. Walter Roban: "I am so pleased to hear of another successful hatching at Nonsuch Island. I want to give a huge congratulations to the staff of the Department of Environment and Natural Resources who work tirelessly - sacrificing their weekends and evenings - to help bring our national bird back from the brink of extinction. Thank you also to Nonsuch Expeditions for enabling these incredible moments to be captured on camera and shared with a worldwide audience."

"Going forward we plan to be LIVE streaming both cameras in parallel to allow researchers and our followers to observe the similarities and differences in behaviors between the two pairs' nesting seasons," said J-P Rouja. “As we were going LIVE with this new camera during the most sensitive part of the nesting season (egg incubation), it was important to install the camera in the least disruptive way possible. Accordingly, we have custom-built new infrared lights to work with our new HD camera to fit in the pre-existing four-inch PVC pipe that remained in place from the original CahowCam setup in this same nest in 2013/14. This also brings us back to the traditional Top Down view that we used for first few CahowCam seasons, giving us an alternate wider view of the entire nest chamber from above. “

Jeremy Madeiros: “This Season we are working with international researchers to track the Cahow’s foraging expeditions using new nano-gps tags to shed light on where they are finding their food in the Sargasso Sea and beyond. In addition, there is concern that new proposals to carry out oil and gas exploration on the Continental Shelves may present a potential threat to the Cahow and many other seabirds, as previous geolocator tagging indicated that Cahows visit these areas regularly for foraging.… In parallel we are doing blood work to identify contaminants that may be exposed to through their food, all of which will assist with the ongoing management of the species.”

JP Rouja: “We archive each season in HD in its entirety, recording 24/7 for 7  months  which we will combine with the maps generated by the Geo tags and the LIVE footage for the STEAM curriculum that we are developing with Cornell. This will be used Internationally in K-12 through University, and adapted locally for public and private schools where it is perfect for localizing and creating cross-curricular lessons that will better engage our students.”

Cornell Lab of Ornithology Bird Cams Project Leader Charles Eldermire: "I continue to be amazed at how close these rare petrels are to the technology and infrastructure that enables us to share their lives with the world. It's really a testimony to both the ongoing efforts of Jeremy and the Bermuda Government as well as the investment from Nonsuch Expeditions that our far-flung audience can now observe two sets of petrels."

David Freestone, Executive Secretary, Sargasso Sea Commission:“The Sargasso Sea Commission is convening a workshop this week in Bermuda and one of the issues being looked at is the connectivity between the Sargasso Sea, Bermuda and the wider Atlantic ocean system. The cahow, is an iconic creature that symbolizes the connectivity between Bermuda and the open ocean - particularly the Sargasso Sea and now this research will provide data to back this up. Its recovery is a great tribute to the dedicated conservation work of Bermudians which is being showcased to the world…”

 John W. Fitzpatrick, Director, Cornell Lab of Ornithology: “The Cornell Lab of Ornithology is thrilled to partner with Nonsuch Expeditions in helping share with the world the intimate biology of these extraordinarily rare petrels, and the conservation success story they represent. We join hundreds of thousands of viewers in hoping that this new chick survives to fledging, and eventually returns to breed on Nonsuch Island.”

Gallery of Nonsuch Island Cahow Chicks - March 10th 2019

Meet the 2019 Nonsuch Island Cahow Chicks - Click for closeups -

Watch LIVE via CahowCam

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2nd CahowCam goes LIVE on Nonsuch Island

A second CahowCam has been launched with a projected hatching window of the 10th - 17th of March.

Watch it LIVE here.

Now in the 7th season broadcasting LIVE from Nonsuch Island, and the 3rd in collaboration with the Cornell Lab of Ornithology (with whom over 15 million minutes of CahowCam video were watched over the past 2 years) our Team has begun installing several new cameras this season giving researchers, students, and viewers around the world alternate views into the nesting activities of the second rarest seabird on the planet.

This new camera is located in burrow #832 right alongside burrow #831 from which the current CahowCam continues to stream as it has for the past 5 years. Historically, this “new” burrow #832 hosted the Cam for the first two CahowCam seasons (2013-2014) during which the same pair successfully reared chicks named “Backson” and “Lightning”. This season the #832 pair are once again incubating what looks to be a viable egg which is projected to hatch between the 10th and 17th of March.

Going forward we plan to be LIVE streaming both cameras in parallel allowing researchers and our followers to observe the similarities and differences in behaviors between the two pairs' nesting seasons.

Charles Eldermire | Cornell Lab of Ornithology Bird Cams Project Leader: "I continue to be amazed at how close these rare petrels are to the technology and infrastructure that enables us to share their lives with the world. It's really a testimony to both the ongoing efforts of Jeremy and the Bermuda government as well as the investment from JP at Nonsuch Expeditions that our far-flung audience gets to now observe two sets of petrels."

Jean-Pierre Rouja | Nonsuch Expeditions Team Leader and CahowCam developer: “As we are going LIVE with this new camera during the most sensitive, egg incubation part of the nesting Season it was important to install the camera in the least disruptive way possible. Accordingly we have custom built new infrared lights to work with our new HD camera to fit in the pre-existing 4 inch PVC pipe that remained in place from the original CahowCam setup in this same nest in 2013/14. This also brings us back to the traditional Top Down view that we used for first few CahowCam seasons, giving a wider view of the entire nest chamber from above.”

Watch both the original CahowCam and CahowCam2 LIVE here now.

2019 Cahow Chicks are Hatching!

As chicks start hatching throughout the Colony, keep watching the CahowCam and NEW CahowCam2 nests LIVE for the opportunity to witness an egg hatching

The egg in the original CahowCam nest is projected to hatch this week and then the egg in the New CahowCam 2 nest is projected to hatch in about 10 days…

Watch both cameras LIVE here now.

Private Tour and Nest Checks of Nonsuch Cahow Colony A

Join Jeremy Madeiros as he inspects the nesting burrows in Nonsuch Island Translocation Colony A, and meets a few new chicks.

Cahow Talk at the BUEI - Season Update and New Research

Save The Date: Monday February 11th, 7:30 pm at the BUEI

The Nonsuch Expeditions present a Cahow Season Update with Jeremy Madeiros and our collaborators from Portugal and the Cornell Lab of Ornithology Bird Cam Team.

Jeremy will give a summary of last years record-breaking season and updates from this one.

You will also learn about upcoming research using GPS based geo-tagging and upgrades to the award winning CahowCam system at the start of what looks to be another amazing season.

BUEI Members: $20 Non-members: $25 Students: $12

Tickets available by phone or visiting the BUEI gift shop | 441.209-0204 I www.BUEI.bm

5 pm: Sushi Happy Hour and À la Carte Menu at Harbourfront

7:30pm: Lecture starts, BUEI Auditorium

Ticket holders are entitled to 10% off dinner at the Harbourfront (food only) before or after the lecture. Please call 295-4207 for reservations and be sure to mention the lecture. Cannot be combined with any other special offer.

The 1st CahowCam Chick has returned!

Backson the 2013 CahowCam chick has returned to Nonsuch Island and has laid an egg!

Above video was produced in 2017 when she first returned.

January 30th 2019 | Nonsuch Island Translocation Colony B:

Whilst conducting routine nest checks today “Backson” the Cahow chick from the first CahowCam Season in 2013 was found in Translocation Colony B on Nonsuch Island. Jeremy actually found her egg first, in a nest in the same burrow that she occupied last year, not being incubated, and then found her in an empty burrow a few feet away. It is not necessarily a problem for an egg to be left on its own for up to several days at a time and in this case she was more than likely taking a break from incubating exploring the neighborhood and wasn’t able to get back to her burrow by sunrise. She was put back in the correct burrow after her health check and will be checked on again later in the week.

She was named by Junior Explorer Sophie Rouja prior to fledging in 2013 based on a Winnie The Pooh story in which a note from Christopher Robin saying he would be "back soon" was misread as "Backson". This is what happens when a five year old picks the name :) yet ultimately proved appropriate as Backson was indeed back soon!

GPS being used in Cahow study

A multi-year collaboration has been launched with visiting researchers from MARE-ISPA and cE3c-FCUL (Portugal) who will work with the DENR and the Nonsuch Expeditions Teams to use GPS tags to track a cross-section of Cahows on their foraging journeys.

Jeremy Madeiros | Principal terrestrial Conservation Officer "The Cahow Recovery Program is committed to helping Bermuda's iconic National Bird recover from near-extinction and once again become an important part of the island's biodiversity. As such, we have always tried to utilize new management techniques and research technology in the program, so that potential threats to the Cahow can be anticipated, planned for and incorporated into ongoing management of the species.

Although we have managed to control threats to the Cahow on its nesting islands, establish new nesting colonies and greatly increase its breeding population, it is still critically endangered, and there is an incomplete understanding of its oceanic range and foraging areas. It is important that we understand where Cahows are finding their food at sea and whether, for example, areas where fishing pressure is concentrated or where offshore oil and gas exploration is planned may overlap with these foraging sites and possibly pose a threat to the birds.”

Geolocator Maps from 2009 study

Letizia Campioni | MARE-ISPA IU “Our project will enhance the ongoing Cahow Recovery Program by shedding light on their pelagic foraging behaviors and potential risks that they may encounter on the high-seas.”

Mónica C Silva | cE3c-FCUL “We are running a project with North East Atlantic Gadfly Petrels and we suspect that their foraging grounds may overlap exposing them to the same risks.”

The local Team has observed that over the past 2 seasons and continuing into this one, that foraging trips appear to be becoming shorter and more frequent. Cahows feed on cold water fish and squid traditionally found hundreds or even thousands of miles away in the North Atlantic basin, north of the Gulf Stream, but these shorter excursions raise the question as to where they may now be foraging, which this study will help answer.

Jeremy Madeiros | “Limited studies with geolocator tags in 2009-2010 made me realize that the Cahow can cover most of the North Atlantic Ocean in its yearly travels, but these had a large margin of error and were just a beginning for this study. I am excited about our collaboration with Letizia and Monica and the potential to focus in greater detail on important feeding areas for the Cahow and other aspects of its oceanic travels with these much more accurate GPS tags."

The longer-term geolocator tags register the time of day that the sun appears to rise and set and once this data is retrieved calculations are made to determine where in the world the subject would have had to be (within a 100 mile radius) for the sun to rise or set at the recorded time, giving their approximate location at sunrise and sunset each day for months on end.

GPS tag taped to tail feathers on Cahow

This season, the shorter-duration, but much more accurate GPS tags will be set to record the time required to contact the numerous GPS satellites at set intervals, which once retrieved can then be extrapolated to identify the GPS locations. In this way the tags do not need to process or calculate the actual GPS location in realtime which would require much larger batteries and processing power…

This allows the tags to weigh only 3 grams and when set to record at hourly intervals, the battery will last up to 2 weeks.

Jean-Pierre Rouja | The Nonsuch Expeditions “Not only will this data be useful to the Cahow Recovery effort, but we will integrate it into the STEAM Curriculum that we are developing with Cornell, giving students interactive real-world data to work with.”

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The Portuguese Team is supported by a grant from The Mohamed bin Zayed Species Conservation Fund.

Female Cahow returns early, pair remain in nest for the day.

Watch LIVE as our Female Cahow has returned earlier than expected and pair will remain in the burrow for the day. Watch their interactions now.

The male had taken over incubation duties on the 14th and the female was expected to stay away for two to three weeks, so her return after only 7 days on the evening of the 21st was quite a surprise.

This is more than likely due to her finding a food source closer to Bermuda than expected as she usually needs to fly north of the gulf stream in the colder waters between Canada and the Azores to forage.

This also means that the male will still have plentiful fat reserves so won’t be ready to relinquish control of the egg just yet.

Cahows will not leave the burrow during daylight, so the situation gives our viewers an extended opportunity to watch the pair together.

Male Cahow returns to take over incubation duties

At roughy 7 pm on January 13th, almost 3 days after his mate had laid their egg, the male Cahow returned right on schedule.

They then spent the next several hours together until she headed out to sea leaving him to incubate their egg for the next few weeks whilst she regains her strength.

Once she returns they will alternate shorter shifts incubating the egg until if all goes well, after roughly 53 days, it hatches.

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CahowCam Season 7 starts as female lays her egg!

The 2019 CahowCam Nesting Season has officially started with the return of the female and the laying of her single egg in the early hours of January the 10th, exactly on schedule.

The incubation period is generally +/- 53 days, the first few weeks of which the male will take on whilst the female goes back out to sea to feed and regain her energy having just produced an egg almost a 1/3 of her body weight! Once she returns they will alternate shorter shifts on the egg until, if all goes well, it hatches in early March.

Jeremy Madeiros | Senior Terrestrial Conservation Officer (Bermuda Government)

I was happy to see the return of our CahowCam female last night just before midnight.

She flew in during the 35 to 40 knot gale just ahead of the cold front that came through, effectively using the winds as a fast lane to bring her back from her feeding grounds to the North.

Over the next 2 hours whilst I watched her preparing the nest and laying her egg, I could hear other Cahows calling in the background so it is clear that others came in with the same front.

As of 2 days ago 6 of the 18 nests in Translocation Colony A had returned birds and after a quick check this AM just ahead of the next cold front I can confirm that there are now birds in 9 of the 18 nests, 6 being females on eggs and 3 being males awaiting their mates return.

Over the next few weeks we will be incorporating “candling” into the nest check process that will allow us to track development of the chick embryos during the incubation period which usually lasts around 53 days.

J-P Rouja | Nonsuch Expeditions Team Leader and Conservation Tech Developer

“We had been watching for her return for the past few days and had alerted our Nonsuch Expeditions and Cornell followers to expect her over the next few nights, so it was amazing to see her show up exactly on schedule. As luck would have it her first activity was to rearrange the nest and in doing so she kicked some dried grass in front of the lens. Nonetheless out team and other late night viewers were able to watch her lay her single egg just after 1am, as Jeremy had predicted, within an hour of her return.”

Charles Eldermire | Bird Cams Project Leader Cornell Lab of Ornithology

“There's nothing quite like the happy, relieved surprise I felt watching the female Cahow amble into the nest burrow from the stormy darkness outside. I was also glad that despite her frenzied nest excavations, we were able to see her calm, determined focus as she laid a single egg. Everyone here is excited to see what the cahows teach us this season, and we're looking forward to sharing their journey with viewers across the world.”

Watch the ongoing nesting activity on our newly upgraded HD CahowCam LIVE stream or sign up for our Newsletter selecting the CahowCam alert option to be notified by email of significant nesting season milestones.