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PEREGRINE FALCON BEHAVIOR, ECOLOGY, CHARISMA: ALL WILD All Galleries
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PEREGRINE FALCON NESTLING DEVELOPMENT { 40 images } Created 1 Jan 2018

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  • Nestling peregrine falcons, 7 days old, resting in eyrie cave with unhatched egg and a few eggshell fragments. © David A. Ponton
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  • Adult peregrine falcon with 7 day old nestlings sleeping next to an unhatched egg, © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30CA0092.jpg
  • Feathers plucked from a mourning dove blow up around a peregrine falcon as she prepares to feed 8-day-old nestlings. © David A. Ponton [photo by motion-activated camera, low-resolution limits reproduction size]
    13R30CA0586.jpg
  • Adult peregrine falcon plucks mourning dove as she prepares to feed 8-day-old nestlings. © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30CA0590.jpg
  • Nestling peregrine falcons, 22 days old, in eyrie cave. Wing stretch reveals primary wing feathers having emerged from the feather sheaths. © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30CA9274.jpg
  • Adult female peregrine falcon stands in eyrie preening her breast feathers as nestlings sleep nearby, © David A. Ponton, [photo by motion-activated camera, low-resolution limits repro. size]
    13R30CB9989.jpg
  • Adult female peregrine falcon stands in eyrie, pausing from preening her breast feathers as nestlings sleep nearby, © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30CB9990.jpg
  • Adult peregrine falcon with 27-day-old nestlings.  One has turned away with prey that was just delivered, the other wailing to be fed. The nestlings have some body feathers showing through the down, © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30CC2077.jpg
  • Adult peregrine falcon with 27-day-old nestlings. Wailing nestling seems to follow sibling that has the prey. The nestlings have some body feathers showing through the down, © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30CC2078.jpg
  • Nestling peregrine falcon, 27 days old, wails for food as adult turns away. This nestling shows fully colored side of head, and body feathers replacing the down on its breast. © David A. Ponton
    13R30CC2080.jpg
  • Nestling peregrine falcons, 29 days old, with no down on the sides of the head, down remaining on top of head, significant dark back feathering, and some breast feathering. These nestlings hatched less than 24 hours apart, but the one on the right shows noticeably less down on its head. © David A. Ponton, [photo by motion-activated camera, low-resolution limits repro. size]
    13R30CC5311.jpg
  • Nestling peregrine falcon, 29 days old, stretching wing. At this age there is no down on the sides of its head and less than typical down remaining on the top of its head. This nestling seems to have been the first hatched but by less than 24 hours according to time-stamped trail camera images, yet shows noticeably more feather development and less down. © David A. Ponton, [photo by motion-activated camera, low-resolution limits repro. size]
    13R30CC5541.jpg
  • Nestling peregrine falcon, 31 days old, stands fully upright and alert on a ledge below the eyrie cave. © David A. Ponton, [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RA9486.jpg
  • Nestling peregrine falcon, 31 days old, sitting back in a resting position, seems to be looking directly at the motion-activated camera that captured this image.  This individual still shows abundant down on its legs and upper wing surfaces, and the large feet are evident, characteristic of the species. © David A. Ponton, [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RA9649.jpg
  • Nestling peregrine falcon, 31 days old on a slanted ledge below the eyrie cave, preening new feathers on her wing. © David A. Ponton, [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RA9697.jpg
  • Nestling peregrine falcon, 31 days old, stands on a ledge below the eyrie cave. © David A. Ponton, [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RA9699.jpg
  • Nestling peregrine falcon crouches on ledge below eyrie cave, having a fierce look that is just incidental, to seeing an adult and wailing for food. © David A. Ponton
    13R30RA9700.jpg
  • Nestling peregrine falcon pauses from preening and seems to look towards the setting sun, © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RA9755.jpg
  • Nestling female peregrine falcons, 31 days old, have spotted a parent and are wailing for food.  © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RA9880.jpg
  • Side view of a nestling female peregrine falcon on a ledge in front eyrie cave, 31 days old, body feathers fluffed, tail feathers not yet fully grown. © David A. Ponton, [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RA9901Exprt.tif
  • Nestling peregrine falcon, 31 days old, watching alertly,  © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RA9904Exprt.jpg
  • Nestling female peregrine falcon at 32 days old, scratches its head, showing the large foot size that is characteristic for the species. © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RB0040Exprt.jpg
  • Nestling female peregrine falcons at 32 days old, resting side-by-side on a ledge below their eyrie cave still show large patches of down. © David A. Ponton, [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RB0050.jpg
  • Nestling female peregrine falcon, 32 days old, on a ledge in front of the eyrie cave exercising her wings.  © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RB0188.jpg
  • Peregrine falcon adult female and juvenile female tug at dove carcass, the juvenile greedily snatching, the adult wanting to control the prey delivery. The comparison of the tail feather length of the adult and the 32 day old shows the growth that will complete in about less than a week. © David A. Ponton, [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RB0615.jpg
  • Nestling peregrine falcon, 33 days old, watching alertly.  © David A. Ponton, [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RB0992.jpg
  • Nestling peregrine falcon, 33 days old, watching alertly.  ©  David A. Ponton
    13R30RB0993.jpg
  • Nestling peregrine falcon 33 days old preens feathers on leg.  © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RB1090.jpg
  • Nestling peregrine falcon 33 days old holds up foot, probably having just been scratching. © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RB1125.jpg
  • Nestling peregrine falcon 33 days old, placing foot, showing long toes that are a characteristic of the species, ©  David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
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  • Nestling peregrine falcon, 33 days old, still laying down to rest sometimes. © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
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  • Nestling female peregrine falcons, 33 days old, one preening wing feathers as sister stands alertly.  © David A. Ponton, [photo by motion-activated camera, low-resolution limits repro. size]
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  • Nestling peregrine falcons at 33 days old spend most of their time resting and preening. © David A. Ponton, [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RB1212.jpg
  • Nestling peregrine falcon at 33 days old, “sits” on the rearward joints in her legs, the ankles, lifts a big foot. © David A. Ponton, [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RB1379jpg
  • Nestling peregrine falcon at 33 days old, “sitting” on the rearward joints in her legs, the ankles, turns her head to watch something flying. © David A. Ponton, [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RB1472.jpg
  • Nestling peregrine falcons 34 days old in front of their eyrie cave, leg strength well developed enabling them to stand for long periods.  The down feathers are mostly shed and the normal juvenile pelage almost complete. © David A. Ponton
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  • Nestlings peregrine falcons 34 days old on a ledge in front of their eyrie cave.  They hatched the same day but the female on the right lagged behind her sister in feather growth/down replacement. © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RB1921.jpg
  • Nestling peregrine falcon on a ledge below the eyrie cave at 35 days old, preening, showing nearly full grown wing primary feathers and tail feathers. This bird has shed virtually all its down feathers and will complete growth of its flight feathers inside a next week. © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RB2880.jpg
  • Nestling female peregrine falcon, 35 days old, full juvenile plumage, very little down remaining.  Keen appearance and open beak is likely due to spotting one of her parents and wailing for food.  © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RB3039.jpg
  • Nestling female peregrine falcons on a ledge in front eyrie cave, 35 days old, have spotted a parent and are wailing for food despite having already eaten, as evidenced by the bulging crop.  © David A. Ponton [photo by motion-activated camera, low-resolution limits repro. size]
    13R30RB3043.jpg