基本信息
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文档摘要
BirdColonies
About13percentofbirdspecies,includingmostseabirds,nestincolonies.
Colonialnestingevolvesinresponsetoacombinationoftwoenvironmental
conditions:(1)ashortageofnestingsitesthataresafefrompredatorsand(2)
abundantorunpredictablefoodthatis