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 Forum Index > Raptors Other than Eagles > Other Raptors -- Questions, Information and General Discussion
 Coopers Hawk (accipiter cooperri)
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By: ostrich (offline) on Tuesday, June 20 2017 @ 08:45 PM EDT  
ostrich

This evening I caught another early evening feeding, and I clearly saw two distinct heads in the nest grabbing at the pieces offered by the female. I watched for a while and I never saw anything that clearly showed whether there is a third hawklet or not, for quite a bit of the time two heads were up high enough to be seen at the same time. At other points only one head was visible with the other down, and hard to tell for sure if it was the same ones the whole time. But one of the hawklets did open up one of its wings for a second and it looked like there were pins starting to come in.



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By: ostrich (offline) on Sunday, June 25 2017 @ 05:28 PM EDT  
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I have been able to get some increasingly good looks at the hawklets, and they are starting to become more visible more often from the ground. Thus far I have not been able to get any clear indications that there are more than two hawklets, although until they get a bit older it is still difficult to confirm there are two. They seem to be still fully in down phase, but at times when the wings and tail are visible there are definitely pin feathers developing.

June 22 - adult female and hawklet
https://www.youtube.com/watch?v=mduux82VF78

Yesterday (June 24) I was able to get a good look at two feedings, with the adult female spending some time right nearby off nest. Both times there were definitely two hawklets participating in the feedings.

First feeding https://www.youtube.com/watch?v=ppcpGDbdD20

Second feeding with some footage of the female:

https://www.youtube.com/watch?v=7xLKmY9s3dk



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By: ostrich (offline) on Friday, June 30 2017 @ 04:33 PM EDT  
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On Wednesday I had the chance to visit the High Park Coopers - from my vantage point watching for about 20min I could only clearly see one of an unknown number of hawklets, but the one I could see looked further ahead than mine, with quite a bit of down on the upperwings and breast already disappearing. I did see one of the High Park adults come by, but off nest.

This morning I'm about 95% sure I was able to see a third hawklet in my local nest, two hawklets sitting together looking over one side of the nest, and a third hawklet looking out over the opposite side. I'm hoping I'll be able to get some footage confirming all three. This afternoon I spotted one standing up high in the nest, and some down is starting to be pushed out.



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By: ostrich (offline) on Tuesday, July 04 2017 @ 01:57 PM EDT  
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Saturday morning I got some more good footage of the hawklets, and some definite indications that they can self feed. However I still didn't get any definite confirmation of a third hawklet, two continue to be visible on a regular basis. The hawklets are quickly losing their down now and seem to have very good development of the tail feathers, primaries, and secondaries.

http://youtube.com/watch?v=-P7OYnoL-v8

http://youtube.com/watch?v=_QwiuESG3YY

http://youtube.com/watch?v=VxKEooRJE48



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By: ostrich (offline) on Wednesday, July 05 2017 @ 12:15 PM EDT  
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Yesterday I saw one of the hawklets branching for the first time - one of them was a bit out of the nest, perhaps 2 or 3 feet above the level of the nest rim, and a bit off to one side, along one of the thicker branches moving out from the nest. This morning I saw both hawklets back in the nest, and interested in what I think was a food drop that probably occurred.



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By: ostrich (offline) on Monday, July 10 2017 @ 12:33 PM EDT  
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Between July 5 and July 8, one of the hawklets (I believe the same one) has been frequently branching out of the bowl, but I suspected that the second hawklet had not yet spent any time out of the bowl. I have not yet seen any definitive sign of fledging, although there have been several occasions in the past several days in which I've been able to see one hawklet in nest but not able to find the other anywhere in the nest tree or spotted in nest. This is not conclusive in any way though since it has generally been typical to have one or both hawklets in nest and difficult to spot from the ground depending on where they're positioned. On Saturday there was one observations suggestive of the first hawklet being off the tree, it was not visible in nest and was not evident anywhere else in the nest tree. I heard some whistling vocalization and looked up to the nest, and the second hawklet was standing on the rim facing into the bowl with an adult that had food, and was beginning to feed. This is quite consistent with the hawklet possibly being somewhere in the adjacent trees and then flying to the nest in response to the food delivery, that is very typical post fledging behavior. However unfortunately I didn't see the adult fly in and I didn't see definitively whether the hawklet flew in from off nest or was somewhere in the tree not visible or already in nest.

July 9 was the first day I spotted both hawklets branching (although not very far out of the bowl), and this morning both were again out of the bowl (but close by).



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By: ostrich (offline) on Friday, July 14 2017 @ 03:54 PM EDT  
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I am putting down July 11 as the day of first confirmed fledging - I saw one of the hawklets roosting in a nearby tree away from the nest (about 30 paces away), so definitely far enough to be flighted. Since then I've spotted one hawklet (I'm assuming the same one which has appeared to be several days ahead in progress from the other) making some short but steady flights among the trees and bushes immediately surrounding the nest. However this year due to the positioning of the nest tree it's a lot harder to tell for sure where they may be if off nest, there are some areas in some adjacent backyards that aren't easy to see because they are on private property and aren't accessible, and there are a lot of foliage which blocks the views.

The second hawklet may well have also made flights off the nest tree but I haven't confirmed that yet, it is clearly branching significantly now.



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By: ostrich (offline) on Sunday, July 16 2017 @ 07:42 PM EDT  
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Yesterday I was almost certain that both hawklets had fledged, this morning I went out about 7:30am and was able to definitively confirm both hawklets are off the nest - once it got a bit more light and some overcast started to clear I could spot both hawklets roosting in different spots in a tree adjacent to the nest tree, about 10-15 yards away. After waiting for a while I was able to pick up some calls by the male nearby, and the male ended up bringing some food to the nest. One of the hawklets came to the nest to claim the food and consume it - at first I wasn't certain if both had tried to come up to the nest, but when the male left only one was around. The other hawklet ended up just continuing to make whistling calls from the other tree. I was able to get some footage of both hawklets and of the food delivery.

https://www.youtube.com/watch?v=CngB_ifaL64

https://www.youtube.com/watch?v=AVoHGuvMb1s



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