Zebra Finches Perching (IMAGE)

University of Utah

Zebra Finches Perching

Caption

Zebra finches perch in a University of Utah laboratory where biologists found that muscles controlling the male songbirds' vocal organs was the crucial factor in allowing them to sing over a wide range of frequencies -- basically the higher half of a piano keyboard. The females only make short, lower-frequency calls.

Credit

Nataliia Verzhbitskiy, University of Utah.

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