This juvenile Least Bittern called persistently for over an hour, the call periodically changing (see Bitterns and Herons) (Aug, NJ).
Green Heron juvenile calling in flight, a soft tuk (July, PA).
Begging calls of young Black-crowned Night-Herons at a colony (bubbling calls are Snowy Egret, May, NJ).
Canada Goose goslings with parents (May, NJ).
Juvenile Broad-winged Hawk; after about 30 days of age the call is the same as the adult (July, NJ).
Immature Red-tailed Hawk (Aug, NJ).
Juvenile Osprey (with adult calls, Aug, NJ).
faster calls first 12s
Spotted Sandpiper, fledgling old enough to flutter short distances (parent calls at beginning, June, PA).
Juvenile Herring Gull. The calls are surprisingly similar to those of juvenile Ospreys (Sep, ME).
Juvenile Laughing Gull (Aug, NJ).
Juvenile Forster's Tern in flight, with adult calls (Aug, NJ).
Juvenile Caspian Tern in flight following an adult (Aug, PA).
Juvenile Royal Tern on beach with adult(Aug, NJ).
Wild Turkey, young chicks (July, PA).
juveniles, old enough to fly (June, PA).
Yellow-billed Cuckoo fledgling (with another in the background). Cuckoos are incredibly precocious, leaving the nest at 7 or 8 days, before they can fly. This bird crept through ground-cover (July, NJ).
Barred Owl, begging calls of juvenile (4.00am,Sep, ME).
Eastern Screech-Owl immature calling at dusk (May, PA).
Juvenile Downy Woodpeckers begin whinnying a couple of days before leaving the nest (nestling, June, PA).
whinny by fledgling (June, PA).
Juvenile Downy Woodpecker with adult (June, PA).
adult peek at left
Juvenile Downy Woodpecker (with Gray Catbird, Aug, PA)
Juvenile Hairy Woodpecker with adult. The call of the young bird is higher (July, NJ).
Hairy Woodpecker (with adult, higher calls including rattles are by juvenile)
Various calls by a family of young Northern Flickers (juv Ovenbird also calling, July, PA).
Keer and begging calls (at point of being fed) by fledgling Northern Flicker at nesthole (June, PA).
Red-bellied Woodpecker nestling calls. Recent fledglings make the same calls (June, PA)