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To our ears, the music of a Marsh Wren will not be essentially the most pleasing. However in a dense habitat of cattails, it’s remarkably efficient. The ratchety, low-pitched, explosive notes – like from a tiny machine gun – carry nicely by means of the thick vegetation. Equally, the wren’s next-door neighbor, the Frequent Yellowthroat, sings a uneven, repetitive music designed to rattle proper by means of a stand of cattails.
Alongside the sting of the identical marsh, an Olive-sided Flycatcher sings, perched atop a tall tree. Its high-pitched, whistled music carries a minimum of half a mile by means of the open air. Sharp, clear notes are perfect for a tree-top singer.
Totally different sounds journey higher in numerous environments. Excessive-pitched sounds have shorter wave-lengths and are extra simply stopped by stable objects – so they’re higher sung from the tree tops. Explosive, low-pitched songs bounce higher previous stable obstacles, whether or not tree trunks or dense cattails. And a lot depends upon the birds getting their message throughout.
What about birds which have neither tall timber nor dense shrubs to sing from, just like the Lapland Longspur? The longspur usually takes flight to sing, casting its light music into the air because it glides above the Arctic tundra.
At present’s present dropped at you by The Bobolink Basis. For BirdNote, I’m Michael Stein.
Sounds of the birds supplied by The Macaulay Library of Pure Sounds on the Cornell Lab of Ornithology, Ithaca, New York. Marsh Wren  recorded by Ok.J. Colver; Frequent Yellowthroat  recorded W.L. Hershberger; Olive-sided Flycatcher  recorded by T.G. Sander; Lapland Longspur  recorded by G. Vyn.
Author: Bob Sundstrom
Producer: John Kessler
Government Producer: Chris Peterson
© 2014 Tune In to Nature.org Could 2017/2019 Narrator: Michael Stein