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The male sings when storms approach and again when storms have passed. [45] In addition to its song, the species has a number of calls used for communicating specific information, such as when a ground predator approaches and when a nest or another American robin is being directly threatened.
A prairie dog town may contain 15–26 family groups, [20] with subgroups within a town, called "wards", which are separated by a physical barrier. Family groups exist within these wards. Most prairie dog family groups are made up of one adult breeding male, two or three adult females, and one or two male offspring and one or two female offspring.
MacGregor's bowerbird (Amblyornis macgregoriae) is a medium-sized, up to 26 cm long, olive brown bowerbird of New Guinea's mountain forests, roughly the size and shape of an American Robin or a Eurasian Blackbird. The male is adorned with an erectile orange yellow crest, that is partly hidden until shown in courtship display.
The white-throated robin (Irania gutturalis), or irania, is a small, sexually dimorphic, migratory passerine bird. [2] The vernacular and genus name Irania alludes to Iran, its type locality, while the specific name gutturalis is Medieval Latin for "of the throat". [3] It breeds in western Asia and overwinters in East Africa.
For 2022 and 2023, the top male dog was Max, but now, the popular name's reign as number one is over. According to the AKC's findings, Milo is now the most common name among male dogs, jumping ...
The female-biased sexual size dimorphism observed in many taxa evolved despite intense male-male competition for mates. [28] In Osmia rufa , for example, the female is larger/broader than males, with males being 8–10 mm in size and females being 10–12 mm in size. [ 29 ]
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Two superficially similar relatives share this species' range. The mountain thrush is uniformly brown with dark bare parts, and the clay-colored robin is much paler and yellow-billed. The sooty thrush behaves like other thrushes such as the American robin. It forages on the ground, singly or in pairs, progressing in hops and dashes with ...