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Portable Network Graphic  |  1995-11-22  |  51KB  |  640x480  |  8-bit (143 colors)
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OCR: SONGS AND CALLS Birds Birding by Ear pi! song is nature' most beautiful music. After the relative quiet of winter the IDENTIFYING SONGS chorus of male passerines awakens us to Birders often uSe phrases spring Birds sing to advertise territory as mnemonie devices to recall and to attract a mate Some birds make an specific bird songs and amazing variety of sound while others are deseribe them to others. nearly silent. Each species has uts own unique These flveateher look- alikes song but not all bird vocalizations are song with similar marks are Birds also use calls to communicate with each Songbirds in full throat best identified by voice. other to beg for food or to sound an alarm Western Meadow lark. podd Thrush and an Indigo Bunting. Nonvocal Sounds Not all bird sounds are vocal. This Ru ...