Nest and eggs ofCollyriocichla superciliosa(Masters)
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چکیده
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Eggs in the nest.
The last several years have produced a great deal of evidence supporting the once revolutionary notion that the formation of the ovary is a directed rather than passive process. For example, factors such as follistatin, respondin-1, and Wnt-4 are differentially expressed in the XX gonad and appear to play a pivotal role in differentiation of the bipotential ovary (1). Primordial germ cells are ...
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—Few descriptions exist of the nesting behavior of the Gray Trembler (Cinclocerthia gutturalis), and the only nest description of this species seems incongruent with what is known about nesting behavior of other species of Mimidae. We report the first definitively described nest of the Gray Trembler in St. Lucia, West Indies in June–July 2007. We observed construction of, incubation at, and fee...
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There is recent concern over the status of many Neotropical migrant bird populations. Reports of declining numbers and the continuing loss and degradation of breeding and overwintering habitats have prompted an upsurge of interest in the conservation biology of these birds (review papers in Hagan and Johnston 1992). Fragmentation of the breeding habitat in North America often is cited as one of...
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ژورنال
عنوان ژورنال: Emu
سال: 1910
ISSN: 0158-4197
DOI: 10.1071/mu910340d