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Here the chips in the first 6 seconds of the cut are adult chips, followed by two flight calls and then by the calls of fledglings (Dark-eyed Junco singing, July, ME).
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Prairie Warbler is similar but a little harder (June, PA).
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A juvenile Pine Warbler in the New Jersey pine barrens; the calls have a prominent trill component (Jun).
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Calls increase in rapidity to the point of being fed at 7 seconds (Aug, NJ).
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Yellow-rumped Warbler juveniles sound similar but the call is lower and more staccato (July, ME).
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Black-throated Blue Warbler fledgling calls are higher, and if this recording is typical, more rapid; note trills at the time of feeding (July, ME).
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Juvenile Black-throated Green Warbler begging calls are metallic (July, ME).
(Sep, ME).
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These birds called in triplets, the third call being similar to Black-and-white Warbler, the next species (July, ME).
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Juvenile Black-and-white Warblers are similar but have a harder typewriter-like call (Worm-eating Warbler chipping, June, NJ).
(these birds were not visualized, July, ME)
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Fledgling Worm-eating Warblers are similar to Black-and-white but are higher (June, NJ).
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The calls of fledgling American Redstarts are soft and high; juvenile begging and being fed by adult female (June, NJ).
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Canada Warbler fledgling chips are similar (lower chips by adult in background, July, ME).
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Juvenile Ovenbirds have an extremely high-pitched soft call, often a twittering (June, NJ).
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A different looking call by a newly fledged Ovenbird running along the ground, but still very high pitched (June, PA).
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Fledgling Blackburnian Warblers have a rapid, high, buzzy call (July, ME).
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Black-throated Green and Blackburnian Warbler fledglings together for comparison (July, ME).
Magnolia Warbler is similar to Blackburnian; these fledglings called mostly in triplets, the last note being lower. The calls are almost identical to those of fledgling Northern Cardinals (July, ME).
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Juvenile Chestnut-sided Warblers utter a soft chip that is used as a location call, and have a slurred begging call when a parent approaches (July, ME).
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(July, ME).
The softer chips are fledgling calls, the sharper, emphatic chips are by the adult male (July, ME).
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Adult-like calls by fledglings that were likely older (July, ME).
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Juvenile Northern Parulas have extremely high-pitched chips (July, ME).
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(July, ME)
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Juvenile Common Yellowthroats have a location call similar to the chip of adults (July, PA).
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Calls speed up into the begging call when being fed (July, PA).
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As is commonplace with fledglings, they fell silent when an adult bird called the alarm (July, PA).
Louisiana Waterthrush fledglings have a short trill-like call (May, NJ).
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As is typical of fledgling calls, they speed up as the parent hands over food. The calls are similar to those of fledgling Chipping Sparrows.
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A different, rising call.
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The Blue-winged Warbler juvenile call is a high, fine buzz (not visualized, July, NJ).
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Swainson's Warbler fledgling (early June, NC)
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