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).
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
Juvenile Herring Gull. The calls are surprisingly similar to those of juvenile Ospreys (Sep, ME).
Juvenile Forster's Tern in flight, with adult calls (Aug, NJ).
Wild Turkey 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 (Sep, ME).
Juvenile Downy Woodpecker whinny (June, PA).
Juvenile Downy Woodpecker with adult (June, PA).
adult peek at left
Juvenile Hairy Woodpecker with adult. The call of the young bird is higher (July, NJ).
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).