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For example, the male great-tailed grackle is 60% heavier than the female. The smallest icterid species is the orchard oriole , in which the female averages 15 cm in length (6 in) and 18 g (0.040 lb) in weight, while the largest is the Amazonian oropendola , the male of which measures 52 cm (20 in) and weighs about 550 g (1.21 lb).
Females may show yellow markings on their hindwings, and both sexes have whitish to tan stripes on their forewings (veins are bordered by white colour). Female: is sexually dimorphic. The female covers the upper range of the wingspan. It is significantly larger than the male. The basic colour of the female is dark brown. The veins are bordered ...
Effect of plumage wear on the identification of female Red-winged and Tricolored Blackbirds. Western Birds. vol 35, no 4. p. 228–230. Vickers ML & Hanson RP. (1980). Experimental Infection and Serologic Survey for Selected Paramyxoviruses in Red-Winged Blackbirds Agelaius-Phoeniceus. Journal of Wildlife Diseases. vol 16, no 1. p. 125–130.
The female is brownish-grey with slight hints of the male's iridescence. The female's eye is dark brown, while the male's is bright yellow. Overall, they resemble the eastern member of the same genus, the rusty blackbird; Brewer's blackbird, however, has a shorter bill and the male's head is iridescent purple. [2]
Flocks of black birds have been spotted in backyards and parks over the past few weeks in the Triangle, causing many of us to do a double take when we leave our homes or pass a large, grassy field.
The common blackbird (Turdus merula) is a species of true thrush.It is also called the Eurasian blackbird (especially in North America, to distinguish it from the unrelated New World blackbirds), [2] or simply the blackbird where this does not lead to confusion with a similar-looking local species.
Papillomaviridae is a family of non-enveloped DNA viruses whose members are known as papillomaviruses. [1] Several hundred species of papillomaviruses, traditionally referred to as "types", [2] have been identified infecting all carefully inspected mammals, [2] but also other vertebrates such as birds, snakes, turtles and fish.
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