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Interactions between european starlings and lewis' woodpeckers at nest cavities

机译:欧洲star鸟和刘易斯啄木鸟在巢穴之间的相互作用

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摘要

I monitored 59 Lewis' Woodpecker (Melanerpes lewis) nests in southeastern Col- orado during the 1992 and 1993 breeding seasons in order to determine the possible impact of competition with European Staling (Sturnus vulgaris) for nest cavities. I recorded 73 interspecific interactions during 418 hours of observation. Out of the 59 breeding Lewis' Woodpecker pairs observed, only one lost its nest cavity to starlings. Lewis' Woodpeckers were dominant in over 90/100 of the interspecific interactions with European Starlings, and such interactions occurred infrequently (1.7 interactions/10 h of observation).
机译:我确定了1992年和1993年繁殖季节东南部Coloraado的59个Lewis'Woodpecker(Melanerpes lewis)巢,以确定与欧洲Staling(Sturnus vulgaris)竞争巢腔的可能影响。在418个小时的观察中,我记录了73种种间相互作用。在观察到的59对刘易斯啄木鸟(Lewis'啄木鸟)繁殖中,只有一只失去了八哥的巢腔。刘易斯啄木鸟在与欧洲Star鸟的种间相互作用中超过90/100占主导地位,这种相互作用很少发生(1.7相互作用/ 10小时观察)。

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