Behavioral Responses of Willow Flycatchers, <i>Empidonax traillii</i>, to a Heterogeneous Environment
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چکیده
Behavioral Responses of Willow Flycatchers, Empidonax traillii, to a Heterogeneous Environment
منابع مشابه
Polygyny and Extra-pair Paternity in a Population of Southwestern Willow Flycatchers
Although polygyny can potentially increase male reproductive success, the benefits of this strategy could be offset by losses to extra-pair paternity or reduced offspring survival. We developed microsatellite markers to assess the influence of extrapair offspring (EPO) on reproductive success and paternity in monogamous and polygynous pairs of the facultatively polygynous Southwestern Willow Fl...
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Concentrations of inorganic elements were determined in eggs of passerine birds including the endangered southwestern willow flycatcher (Empidonax traillii extimus) from four regions in Arizona. The main aim of the study was to determine the distribution of metals in egg contents and eggshells, with emphasis on the deposition of Sr in eggshells. Seventy eggs of 11 passerine species were collect...
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