peteiros das aves
TRANSCRIPT
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PETEIROS
DAS AVES
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QUE SON?Éa única estrutura córnea que cubre as mandíbulas das aves e dalgúns animais para procesar os alimentos, que tragan enteiros.
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O peteiro varía segundo a dieta e o hábitat, aínda que os machos tamén o utilizan para atraer ás femias.
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TIPOS DE PETEIROS
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CARNÍVORO: Come carne
Aguia
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PESCADOR DE SUPERFICIE:
Captura os peixes dende o aire.
Garza
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AVES FILTRADORAS: comen pequenos animais e plantas
do fondo
Cullereiros
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Granívoras: aliméntanse de froitos e sementes
Pardal
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Insectívoras: Comen insectos
ferreiriño
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Sondeadoras: comen bichos que están enterrados no chan.
mazarico
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Pescador-Mergullador: mergúllanse na auga para coller os peixes.
Alca torda
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Segadores: Comen herba
Cisne negro
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Laura Paz, Laura Chaves, Miriam Trigo
2º ESO, xuño 2012
FOTOS: Adela Leiro, Mon Daporta