Vireo leucophrys
National Institutes of Health
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Divergence in song culture has been well documented among isolated bird populations. Montane populations separated by unsuitable…
T White-crowned Sparrow Zonotrichia leucophrys, previously unrecorded in Britain and Ireland, occurred twice during May 1977. The…
Parental care behaviour was observed in three captive families of Ringed Teal. Both parents were very protective of their broods…
Blanchard ( 1941), in her classic monograph on the White-crowned Sparrow (Zonotrichia leucophrys), referred to one instance of…