2016 CahowCam LIVE Broadcast
The 2015/16 Cahow Nesting Season is now over, please see highlights above and below and be sure to sign up to our Newsletter for announcements for further developments next season that will start in November: .
Hello World! March 6th 1:08 am, 2016, Cahow chick hatches with several hundred faithful CahowCam viewers watching! Replay the hatching event and follow other highlights below (This is infrared CahowCam footage after processing).
Tempest has left the building... June 5th, 2016, Our star chick now named "Tempest" has fledged, please scroll down for season highlights.
Hello Stormy! June 5th, 2016, A Mystery Petrel (now identified as a Leach's Petrel) has visited the now empty Cahow burrow. UPDATE: June 26 th He has been returning virtually every night to work on the nest and spend a few hours calling out for a mate. Please stay tuned for updates on this Landmark event and watch highlights further down this page!
Keep watching and please LIKE / SHARE this page. The week of the hatching, this page / event maintained 6000+ viewers and served 100,000+ minutes of streaming video!
2016 Nesting Season Highlights
We began our coverage of the 2016 nesting season by documenting for the first time ever the courting and mating behaviors that took place this past October & November of 2015 (see highlights below). This culminated in the laying of a single egg on January 16th, which hatched in the beginning of March. Please subscribe to our Newsletter selecting the alert option to receive updates throughout the season.
Wing chord growth and weight
Below are Highlights & updates in ascending order, please check back!
July 10th J-P Rouja “At 2.30 this morning "Stormy" was back once again preceded this time by the land crab who visits very few days. Stormy has been visiting every night for over a month now to re-arrange the nest and call out for a mate.”
June 25th jeremy madeiros “Sure enough, at 11.24pm, Stormy the Leaches Storm-Petrel comes into nest burrow. If he follows the pattern he has been keeping, he will re-arrange nest material for an hour or so, then start to call.”
June 17th 2:30 am jeremy madeiros “Good evening; it looks (and sounds) like "Stormy" the Leaches Storm-petrel, has returned tonight around 2.00am Bermuda time and is presently singing away outside the burrow trying to attract a mate.
It is good to see he has returned, 2 nights after being scared away by a fully fledged Cahow chick, more than twice his size, that was visiting from an adjacent nest burrow (Chick fledged last night).”
June 12th jeremy madeiros “Good morning; "Stormy" seems to have been arriving every night between 1.15am and 1.50 am. He comes in the nest chamber, re-arranges the nest material, then goes back near the nest entrance to sing.”
June 10th J-P Rouja Now confirmed as a Leach's Petrel it has returned to the now empty Cahow burrow for the 5th night in a row to cleanup and call out for a mate!
June 8th J-P Rouja A mystery Petrel has returned to the now empty Cahow burrow for the 3rd night in a row. We are having video and audio analyzed to identify it.
June 6th J-P Rouja It appears as if "Tempest" (or one of his parents) returned around, 12:45 AM. Iit was the chick, he probably spent yesterday sleeping in an empty burrow next door, however now being completely down free should fledge as as originally projected tonight or tomorrow.
June 6th jeremy madeiros “I can confirm that this was the adult male parent, carrying out a late feeding visit to the now-departed Tempest chick. Late visits are a sign of highly successful breeding pairs.”
June 5th jeremy madeiros “The "Tempest" Cahow chick left the nest at 10.56pm Bermuda time on Sat. 4th June; during checks at 1.45am and 3.30am, the chick could not be found and is probably exercising.
A couple of times during the night, a large Red Land Crab also entered the burrow briefly. In addition, a small dark tubenose seabird, half the size of a Cahow, entered the nest. Audubon's Shearwater?
If the mystery Seabird was a Audubon's Shearwater, this is an amazing event, as this species last nested on Bermuda in the early 1970s! Scroll to 00.01.30 and 00.56.00 to see.
“Had a review of the video and do not now think that it was a Audubon's Shearwater; bill not long and thin like A.S., but short & thick like a gadfly petrel, also no white visible on sides of head/neck”
June 3rd jeremy madeiros “Good morning; "Tempest" the Cahow chick came out of his nest burrow last night to exercise his flight muscels and imprint on the nesting colony site. This is the 2nd night he has been out to exercise. My guess is that Tempest will spend another 4 nights or so exercising, until all down is gone from hid upper body. He will then fledge out to sea, not to return for 3 to 5 years (2019 - 2021!).”
June 3rd jeremy madeiros “Good morning; the "Tempest" chick did come out of the nest burrow for a couple of short periods last night, to exercise and look around. Its weight on Wed. was 293 gm, wing chord =258mm.”
June 1st | 1 am jeremy madeiros “The adult male just entered the nest chamber for a feeding visit at 11.49pm. This is good, as the weight of the chick had dropped to 266 gmswhen weighed at 6.00pm on Tuesday. Wing chord was 255mm.
"Tempest" the Cahow chick received a feeding visit from the male bird last night (May 31-June 1) which can be seen by scrolling to 21.42.05 on the video timeline (11.49pm Bermuda time).”
May 31st jeremy madeiros “Checked the Nonsuch Cahow nesting colony about an hour ago (1.00am Bermuda time). Our video chick has not been carrying out pre-departure exercising yet, but two other chicks from nearby nests were.”
May 28th jeremy madeiros “Good evening; "Tempest" the Cahow chick's weight today was 291 gms, and wing chord was 246mm. Since most Cahow chicks start leaving nests to exercise at 245mm, maybe our chick will start tonight.”
May 26h jeremy madeiros“This male bird seems to have taken a more active role in feeding the chick over the last month, after being absent for more than 3 weeks. This chick probably has less than 2 weeks before fledging.”
May 25th jeremy madeiros “Looks like the male Cahow just finished his feeding visit and departed from the nest at 11.58pm Bermuda time. The chick looks fat and contented, still uttering a repeated begging (feed me!) cry.”
May 24th jeremy madeiros “Good evening; there is an adult feeding visit underway at 11.15pm. Looks like the adult female this time. I will weigh the chick tomorrow.”
May 23rd jeremy madeiros “Good evening; the CahowCam chick was officially named "Tempest" by my daughter, Elizabeth Madeiros, on Saturday, 21 May. Chick wt. was 335gms, wing chord was 220mm. Chick spending much time in tunnel” See Blog Post
May 18th jeremy madeiros “Good evening (3 am on the 18th) ; the chick just had another feeding visit by the female bird-unusual for same adult to visit 2 nights in row (scroll to 49.49). Chick wt increased from 300g Mon to 385g Tues after visits.”
“Just carried out a weight/growth assessment of the Cahow chick; following last night's adult feeding visit, this chick has increased in weight from 385g to 435gms! Wing chord has increased to 204mm.”
May 17th jeremy madeiros “Adult female Cahow arrives for feeding visit at 4.35 am (28.10.00 on video timeline). Adult gives chick 20 brief feeds up to 4.45am, then starts preening chick, which is still begging for food.”
“Good am again; I have scrolled back through video and found that before the female visit, that the chick was also visited by the adult male starting at 12.40am (24.15.20 0n timeline) double visit!”
May 16th jeremy madeiros “Good morning; looks like the chick did not receive any feeding visit from the adults last night. The chick is 72 days old today (Mon 16 May), about 21 days from fledging to sea.
May 15th jeremy madeiros“Good Morning; the chick did not have a feeding visit last night (Sat/Sun) but did have a feeding visit by the female on previous night (Fri/Sat)
May 11th jeremy madeiros “Chick comes back into nest chamber after staying out of sight in nest entrance tunnel (which in the case of this nest, is over 6 feet long) at 1.10 am Bermuda time.”
May 9th jeremy madeiros “Good evening; the chick seems to be having a quiet night after feeding visits by both adults over 3 consecutive nights. The chick is 65 days old today, or the two-third fledged stage. wt = 380 gms.”
May 8th jeremy madeiros “Happy Mothers Day! The chick was fed by the male bird starting at 2.04am Sunday, the first time the male has been confirmed in almost 3 weeks. The visit lasted 1 hour 19 mins.”
“Just finished weighing/measuring all Nonsuch Cahow chicks; many received feeding visits last night. Our video chick weighed 350 gms (compared with 313 gms 2 hours before it was fed).”
May 7th jeremy madeiros “The chick finally had a feeding visit by the female bird, which arrived at 4.52am Bermuda time, just as the high winds subsided slightly. It has been about a week since the last feed for this chick!”
“Good evening; carried out weight check on chick; chick wt increased from 280gms before adult visit last night, to 313 gms tonight (Sat) wing chord = 157mm.”
May 6th jeremy madeiros “No adult visit again last night, prob due to weather conditions (rain/strong winds 25-35k) Very rough at Nonsuch, wves to 13' Chicks here are safe& dry, but smaller nest islets have wves breaking over”
“Bored chick often stretching growing wings and preening itchy flight feathers emerging under natal down. Stormy, windy, rainy day at Nonsuch. Winds have gusted to 44mph. Will weigh chick tomorrow.”
May 5th jeremy madeiros – “The chick was not visited last night, 5 days since last feeding visit; wt was 300 gm on Wed. (wing chord 145mm) Strong weather front approaching with winds over 40 knots forecast this afternoon & Fri.”
May 4th jeremy madeiros “Good evening; the chick has not had an adult feeding visit for the last 3 or 4 nights and weighed in at 317 gms on Monday. Primary feathers on wings are prominant, white facial feathers growing in.”
April 29th jeremy madeiros Chick wt increased from 320g yesterday to new high of 367g. f you scroll ahead to 02:40 on this video, you will see the beginning of a feeding visit by what looks like the female adult. The chick is fast asleep, responds at first with obvious fright, and after the adult gives an "estatic" greeting call, the chick recognizes its parent and gives a high-pitched greeting call, flapping its little wings excitedly, before being preened and fed. If the rain (and thunderstorms) at present over the island let up, I may weigh the chick later today to see how much weight it gained in this feeding. All the best.
April 28th jeremy madeiros “Good Morning. Looks like there was another adult feeding visit in the early am, starting at 3.58 am (scroll to 13.48.00 on video).” The feeding visit by the adult lasted only 47 minutes (3.58am until 4.45am) before the adult departed back out to sea. I will carry out weight check 9am (Bda time)
“Carried out chick check after last night's adult feeding visit Chick wt increased from 320g yesterday to new high of 367g.”
April 27th jeremy madeiros “Good evening; weighed & measured the chick this afternoon. Chick was not fed last night, and wt had fallen from 353 gms Tuesday to 320 gms today. Wing chord had increased from 123mm to 128mm in length” When the chick stretches its wings, you can now see the primary feathers emerging from their sheaths along the wingtips. The chick is now more than half-fledged and typically starts excercising more. Bored chick preening & re-arranging nest
April 26th jeremy madeiros “Thanks again Corrine, for reporting the beginning of the adult visit - I must admit I was getting some rest! The adult entered nest at 1.07am, & departed at 3.18am. Duration of visit = 2 hours 10 mins” I also carried out a weight check this morning, to see how much weight the chick gained from the feed. Weight increased from 310 gms to 353 gms, wing chord from 119mm to 123mm - in 24 hours!
April 25th jeremy madeiros “Good morning; carried out weight check on chick this am. (scroll to 02.17.00 on video timeline) Weight = 310gm; wing chord = 119mm. Due for an adult feeding visit tonight.” Evening: Adult feeding visit to chick (looked like the female bird) between 8.45pm and 10.32pm tonight (24th March). Happy to see as the chick had not been visited for a few nights. This was 1st feeding visit in several nights; after feed, adult rested next to chick before going into tunnel. Same adult came back for a while before leaving for good at 10.34pm. Will weigh tomorrow.
April 24th jeremy madeiros “Good day; rainy and very windy at the colony site so I will not be carrying out a weight check. Chick had no feeding visit last night, last visit 4 nights ago. Bored chick preening & re-arranging nest”
April 21st jeremy madeiros “The video catches a feeding visit by one of the adults, starting at 2.49am Thursday (scroll to 29.39 on video timeline) Weight of chick after feed early this afternoon was 329 gms, wing chord was 104mm.”
April 18th jeremy madeiros “Good morning; carried out 1st wt check in 5 days on the Nonsuch chicks; our video chick weighed 320 gm today with wing chord of 90mm (up from 62 mm 5 days ago). scroll to 10.44.30 on video timeline.”
April 12th jeremy madeiros “Good morning; the chick did not appear to have a feeding visit from its parents last night; however, after 3 feeding visits over the weekend, the chick on Monday weighed 359 gms - the heaviest yet.”
April 11th jeremy madeiros “Adult bird left nest and departed to sea at 2.10am (02.41.26 on video timeline) Total duration of feeding visit = 39 minutes. Chick was 342gms at Sunday's weighing, undoubtedly more after this feed.”
April 10th jeremy madeiros “Weighed this chick about 2.00pm this afternoon (10th April. Following last night's feeding visit by the female, the chicks weight has increased to 342 grams - a 50gm increase in one feed!”
April 8th jeremy madeiros “Adult bird still resting next to chick at 1.30am. Appears to be male bird. Last night the female made a feeding visit - chick wt today was 275gms. Will weigh chick again tomorrow.”
April 6th jeremy madeiros “This was 1st feeding visit in several nights; after feed, adult rested next to chick before going into tunnel. Same adult came back for a while before leaving for good at 10.34pm. Will weigh tomorrow.”
March 30th jeremy madeiros “Good morning all; our chick had a adult feeding visit in predawn hours between 5.04am and 5.24am (scroll to 17.58 to 18.19 on the video timeline). This is the shortest feed visit recorded, at 20 mins.”
March 29th jeremy madeiros “If you scroll ahead to 02:40 on this video, you will see the beginning of a feeding visit by what looks like the female adult. The chick is fast asleep, responds at first with obvious fright, and after the adult gives an "estatic" greeting call, the chick recognizes its parent and gives a high-pitched greeting call, flapping its little wings excitedly, before being preened and fed. If the rain (and thunderstorms) at present over the island let up, I may weigh the chick later today to see how much weight it gained in this feeding. All the best.”
March 28th jeremy madeiros “Good evening; the chick received a feeding visit earlier this evening lasting only 48 minutes, arriving at 9.06pm and departing back out to sea at 9.54pm (March 28th) Will be weighing chick 9am Monday”
March 25th jeremy madeiros “Adult feeding visit to chick (looked like the female bird) between 8.45pm and 10.32pm tonight (24th March). Happy to see as the chick had not been visited for a few nights.”
March 22nd jeremy madeiros “Good afternoon; just carried out a weight check on all 10 chicks on Nonsuch (still too rough to visit other islands) Weight of our video chick today was 178gms; last check on 19 March was 203gms.” “The chick has not been fed for the last two nights and so has lost some weight. It is not a problem, as chicks can go a week or more without being fed, with no ill effects.”
March 19th jeremy madeiros “Good evening all; looks like it is mom's turn to feed the chick tonight (the male made a feeding visit last night). The chick's wt at today's check was 203 gms (was 193 gm 2 days ago. Good job mom dad”
March 13th jeremy madeiros“Just carried out wt check on chick; these almost nightly feeds by the adults are having an effect! chick wt today was 130 gms; wt on 10th March was 74 gms. Also confirmed 8th chick to hatch on Nonsuch”
March 6th 1:08 AM
After a very long hatching period, another Cahow, one of the world's rarest seabirds, entered the world at 1.08am Sunday morning March 6th ("dimpling" cracks of the eggshell as the chick started to crack its way out, the first stage of hatching, were first noted at 9.00am on Thursday March 3rd).
The chick, still wet at this point from having just emerged from within the eggshell, will be brooded and occasionally preened gently by the female bird, and in about 4 hours should have dried out and assumed its familiar "grey puffball" appearance.
It is still not completely safe, as a very small percentage of chicks become so exhausted by the hatching process that they succumb within the first hours after entering the world. However, this chick appears to have plenty of energy and so things look very good at this point.
Thanks to everyone that has shown interest and checked in during this long, long process!
All the best, Jeremy
Jeremy Madeiros Senior Conservation Officer (Terrestrial) Dept. Of Conservation Services BERMUDA
March 5th 1:30 AM egg can be seen with hole in it as the chick chips its way out, keep watching!
March 4th 7:00 AM the egg has not hatched yet, please keep watching!
March 3rd | Hatching Alert! - During this mornings health check (see below) "dimples" were seen on the egg which is usually a sign of either the start of the hatching process or egg failure (which it does not appear to be). The hatching process can take up to 48hrs so please stay tuned!
Feruarury 11th @ 3am | There was a very fast handover between the parents which lasted approximately 10 minutes. (see highlight below).
January 31st @ 6pm | Both parents are still in the nest having jointly incubated the egg for the past 3 days!
January 28th @ 7.50 pm | The female Cahow returned after 9 days to take over incubation from the male.
January 19th @6am | The female Cahow remained in the nest longer then expected and did not depart until just before sunrise. The pair spent the 2 days in the nest together taking turns incubating the egg.
January 17th @ 7am | The male Cahow returned during the last few minutes of darkness to releive the female who will most likely head back out to sea tonight.
January 16th 2016 | The LiveStream has recorded the return of the female @ 20:55 (8:55pm)on January 15th in what were at the time stormy conditions and subsequently revealed that she had laid her single egg at 6:15am on January 16th!
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