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THE FORUM
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20-Apr-23, 08:14:29 AM
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2787
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Other Nature Related Information / Falcon Web Cams / Re: Jersey City
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on: 28-May-14, 07:19:24 PM
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May 28: We were dead on with the aging of the nestling (9-10 days old) when we fostered it into the nest last Wednesday! Today the nestling is 16 days old, and its primary coverts (flight feathers) are just starting to come out of the sheath. You can see the dark feather tip (circled) in the above photo. I believe it's a female. From looking at photos of her with her siblings, she looks bigger than her former nestmates. Female raptors are larger than males, and with falcons, they all hatch around the same time, so aging them is much easier since they're all the same age. At this age her feathers are really starting to develop. Her tail feathers have emerged and her down is looking even more fluffy. By 20 days her downy feathers will be very heavy and her contour or body feathers will become visible on her wing margins and tail. She is now four times her birth weight and is moving all around the nest. It really is amazing to watch how fast they grow! -Ben   fresh catch for the young eyas!  So happy this worked out! 
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