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The Gouldian finch was described by British ornithologist John Gould in 1844 as Amadina gouldiae, [3] in honour of his deceased wife Elizabeth. [4] [5] Specimens of the bird were sent to him by British naturalist Benjamin Bynoe, although they had been described some years before by French naturalists Jacques Bernard Hombron and Honoré Jacquinot. [6]
The shape and size of the beak aid in the extraction of seeds from the seed heads of thistles, sunflowers, and other plants. [13] The American goldfinch undergoes a molt in the spring and autumn. It is the only cardueline finch to undergo molting twice a year. [14]
Sarah Rosalind Pryke is a behavioural and evolutionary ecologist. [1] [2] A graduate of the University of Natal (South Africa), with a PhD from Göteborg University (Sweden), she is best known for her research on the evolution of sexual signals in the Red-collared widowbird and more recently research on maternal effects and the evolution of alternative reproductive strategies in the Gouldian ...
The genus Erythrura is sister to the Gouldian finch which is placed in its own genus Chloebia and together the two genera form the subfamily Erythrurinae. [ 5 ] The cladogram shown below is based on a molecular phylogenetic study of the Erythrura parrotfinches published in 2023.
Other cases of natural polymorphism are of various kinds; many are melanic/nonmelanic (some paradise-flycatchers, Terpsiphone, for example), but more unusual types of polymorphism exist – the face colour of the Gouldian finch (Erythrura [14] [15] gouldiae) or the courtship types of male ruffs (Philomachus pugnax). [16]
The lesser goldfinch (Spinus psaltria) is a small finch in the genus Spinus native to the Americas.. As is the case for most species in the genus Spinus, lesser goldfinch males have a black forehead, which females lack.
The post Throwback: Jennie Finch’s Best Sports Illustrated Swimsuit Photos appeared first on The Spun. Perhaps we’ll see another one or two appearing in the 2022 issue, which has begun to shoot.
A notable example in birds is the zebra finch. These birds have lateralised brain structures in the face of a common steroid signal, providing strong evidence for a non-hormonal primary sex mechanism regulating brain differentiation.