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web.stanford.edu/group/stanfordbirds/text/essays/Nonvocal_Sounds.html

... tail feathers and causing them to vibrate, birds can create a variety of whistling, rattling, buzzing, or other sounds as air passes through those feathers in flight.

www.sciencedirect.com/science/article/pii/S0376635716303655

Caterpillar defense whistles evoke startle responses in Red-winged blackbirds. •. Birds fly away and dive in response to sounds activated by a sensor while ...

www.rspb.org.uk/birds-and-wildlife/bird-and-wildlife-guides/ask-an-expert/previous/mimic_human_whistle.aspx

Blackbirds have even been recorded making the sound of a reversing lorry! It has also been noted that blackbirds can imitate human whistles either as a ...

celebrateurbanbirds.org/blog/know-wing-whistles

Mourning Doves are known for their gentle cooing sounds. But sometimes they can really make a racket! Have you ever heard a Mourning Dove make a strange  ...

thewoodenwagon.com/woodentoys/birdcalls.html

Handcrafted Bird Calls and Whistles ... Based on the use of bird-calls, these educational toys allow one to learn to recognize birds by their song, to communicate ...

www.amazon.com/bird-whistle/s?k=bird+whistle

Results 1 - 16 of 1000+ ... Comtrue Bird Call Toy Whistle for Kids, Water & Bath Play Fun, ... Pet Dog Birds Training Whistle - Sound Reflex Sonic Whistle for Dogs ...

www.natureconservancy.ca/en/blog/50-bird-species-and-the-sound-they-make.html

Mar 19, 2020 ... Have you ever wondered why birds sing and call? The tufted titmouse's whistling may sound like whimsical springtime fun to our ears, but for ...

earbirding.com/blog/specs/whistles-and-hoots

(Peterson Field Guide to Bird Sounds, interactive version of pp. 16-17). Tone quality changes with pitch. The pitch of a sound has a significant impact on its tone ...

tpwmagazine.com/archive/2015/aug/ed_2_birdsongs/index.phtml

My old rocker ears also enjoy the sounds of nature — whether from a frog, katydid, ... Along with the whistles of bobwhite quail, this was once a dominant song ...

www.birdnote.org/listen/shows/birds-whistle

Many bird songs are rich and complex, difficult to remember, and nearly impossible to imitate. Some species' songs, however, sound as if they could have been ...