The call of juvenile Chipping Sparrows is a short, high trill (Aug, NJ).
Field Sparrow juvenile, with adult chipping (Jul, NJ)
Juvenile Song Sparrows have buzzy calls (July, PA).
Juvenile Dark-eyed Junco calls are similar to the common call heard by flying adults (July, ME).
Adult call in flight (Feb, PA).
Eastern Towhee juveniles have a high buzzy call and a chip call.
Buzzy call (Sep, NJ).
Eastern Towhee fledgling chip call (June, PA).
Juvenile Northern Cardinal calls are rapidly repeated so that they run into each other, unlike the more widely spaced calls of most other fledglings (Jul, NJ).
Blue Grosbeak juvenile (softer, rising call) and adult (louder, r-shaped call)(Aug, NJ).
Indigo Bunting juveniles are often heard calling into September (Sep, NJ)
Juvenile Red-winged Blackbird (June, PA).
Juvenile Red-winged Blackbird, calls by a less recently fledged bird (July, PA).
Common Grackle fledgling (Aug, PA).
Brown-headed Cowbird juvenile location call (Jul, NJ).
Juvenile Brown-headed Cowbird location call, different to the previous example (July, PA).
Same bird, calls as Common Yellowthroat approaches, feeding it at about 25s.
Juvenile Brown-headed Cowbird being fed by a Red-eyed Vireo. As the vireo approaches, the calls lengthen until the point of feeding at 12 seconds (July, PA).
time scale reduced
This juvenile Baltimore Oriole was high in the tree canopy (June, NJ).
Juvenile Orchard Oriole calls (June, PA).
Juvenile and presumed adult Orchard Oriole calls (July, PA).
juv calls to right with presumed adult calls to left
Fledgling House Finch (Red-winged Blackbird whistling, July, PA).
Juvenile Purple Finch (Jul, ME).
The calls of recently fledged American Goldfinches are frequently heard in late summer and early fall (Aug, PA).
Juvenile House Sparrow begging call (Aug, PA).