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The American robin rejects cowbird eggs, so brood parasitism by the brown-headed cowbird is rare, and the parasite's chick does not often survive to fledging. [41] In a study of 105 juvenile robins, 77.1% were infected with endoparasites, Syngamus sp. being the most commonly encountered, in 57.1% of the birds. [42]
The larger American robin (Turdus migratorius) is a much larger bird named from its similar colouration to the European robin, but the two birds are not closely related, with the American robin instead belonging to the same genus as the common blackbird (T. merula), a species which occupies much of the same range as the European robin. The ...
Anecdotal reports of them flying much higher have yet to be corroborated with any direct evidence. [33] Seabirds fly low over water but gain altitude when crossing land, and the reverse pattern is seen in land birds. [34] [35] However most bird migration is in the range of 150 to 600 m (490–2,000 ft).
Vultures use their excellent eyesight to scan the landscape below from a relatively static aerial position. Instead of flying over a larger distance, they use elevation to expand their field of vision. [3] A bird strike was recorded at this height in 1973. Common crane: Grus grus: Gruidae: 10,000 metres (33,000 feet)
In the spring, the winter robins will fly north into Canada and be replaced by robins who spent the winter farther south. So, the Canadian robins spend their life in eternal chilly weather: southern New England in winter, subarctic Canada in summer. Marco polo 03:42, 29 December 2008 (UTC)
The North Island robin (Petroica longipes; Māori: toutouwai, pronounced [ˈtoutouwai]) [2] is a species of Australasian robin endemic to the North Island of New Zealand.It and the South Island robin (P. australis) of the South Island and Stewart Island were once considered conspecific (and called the "New Zealand robin"), but mitochondrial DNA sequences have shown that the two lineages split ...
Stewart Island robin. The South Island robin is a small passerine, 10–18 cm in length and weighing around 35 g. North Island robins do resemble both females and juveniles of the South Island robins, as well as all the Stewart Island robins, which can sometimes make it difficult to distinguish between the three.
Described by Belgian naturalist Auguste Drapiez in 1819, the pink robin is a member of the Australasian robin family Petroicidae. [5] [6] Sibley and Ahlquist's DNA-DNA hybridisation studies placed this group in a Corvida parvorder comprising many tropical and Australian passerines, including pardalotes, fairy-wrens, honeyeaters, and crows. [7]