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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.
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).
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]
The colors that birds have boil down to evolutionary trade-offs and selective pressures, Prum said. ... Humans have three types of cones in our eyes for red, green and blue light. Birds have an ...
All are birds of more open habitats. The melodious blackbird is larger and longer tailed; it has dark eyes and a stocky bill with an evenly curved culmen. [10] The bronzed cowbird is thicker necked than is the catbird and has a bronzy, rather than purplish or greenish gloss to its plumage; its eye is bright red rather than dark red. [11]
The adult pale-eyed blackbird is entirely black in both sexes. It has white or pale buff coloured irises to its eyes which are very distinctive and distinguish it from other black birds found in the area such as the velvet-fronted grackle and the shiny cowbird which have dark eyes. Juveniles and immature birds are brownish-black with underparts ...
The black-capped blackbird (T. s. nigropileus) is resident up to about 1,820 metres (5,970 feet) in the Western Ghats of western India and the northern and central parts of the Western Ghats. Some populations migrate further south in winter. [4] The male is brownish slate-grey with a dark cap, and the female is mid-brown, paler below. [5]
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.