We talk about all things related to backyard birding and bird watching. Juveniles become capable of sustained flight two weeks after fledging.[12]. Some of fruits and berries likely to cause intoxication as they ferment include huckleberries, blackberries, juniper berries, and crabapples. Often believed to be the first bird of spring, the American robin is actually one of the most common and familiar backyard birds all year long. In some areas, robins, particularly of the northwestern subspecies (T. m. caurinus), will feed on beaches, taking insects and small mollusks.[7]. [citation needed], A clutch consists of three to five light blue eggs, and is incubated by the female alone. Though you’ve probably seen countless robins in your life, do you really know that much about them? American Robins are fairly large songbirds with a large, round body, long legs, and fairly long tail. The song period is from late February or early March to late July or early August; some birds, particularly in the east, sing occasionally into September or later. The American robin's nest is a deep, sturdy cup of twigs, grasses, and mud, usually positioned in the crotch of a tree or a branch fork, though these birds will also readily use nesting shelves. [7], The American robin is a known reservoir (carrier) for West Nile virus. [12], Newly hatched chick among unhatched young, Sequence of dated images showing the progress from eggs to fledging in three weeks, The male American robin, as with many thrushes, has a complex and almost continuous song. During this time, around four eggs are laid by the mother, though she can lay up to seven. Because they stay in many areas through the winter and will migrate early when the first signs of spring are barely noticeable, seeing the first American robin is a welcome indication that spring is on the way for many people. The wings of juvenile birds develop rapidly, and it only takes a couple of weeks for them to become proficient at flying. Robins make a good reference point for comparing the size and shape of other birds… They may also nest in the crooks of gutter downspouts, on top of sheltered birdhouses, or in other unusual locations. [12] Adults are primarily taken by Accipiter hawks, cats, and larger snakes (especially rat snakes and gopher snakes). [7], The eastern subspecies of the American robin (T. m. migratorius) is 23 to 28 cm (9.1 to 11.0 in) long with a wingspan ranging from 31 to 41 cm (12 to 16 in), with similar size ranges across all subspecies. Even when it occurs, the parasite's chick does not normally survive to fledging. [14] The head varies from jet black to gray, with white eye arcs and white supercilia. The altricial chicks are naked and have their eyes closed for the first few days after hatching. It’s not easy being small — there are a number of threats that American Robins must watch out for. Robins forage primarily on the ground for soft-bodied invertebrates, and find worms by sight (and sometimes by hearing),[25]:149 pouncing on them and then pulling them up. [33][34] They may be taken by nearly every variety of North American accipitrid, from the smallest, the sharp-shinned hawk, to one of the two largest, the golden eagle, most every North American falcon from the smallest, the American kestrel, to the largest, the gyrfalcon, and almost all owl species from the northern pygmy owl to the snowy owl. [8][9] This conflicts with a 2007 DNA study of 60 of 65 Turdus species, which places the American robin's closest relative as the rufous-collared thrush (T. rufitorques) of Central America. At night, American Robins gather in flocks to roost together. With many birds, there are noticeable coloration or size differences between males and females. [12][13] Among standard measurements, the wing chord is 11.5 to 14.5 cm (4.5 to 5.7 in), the culmen is 1.8 to 2.2 cm (0.71 to 0.87 in) and the tarsus is 2.9 to 3.3 cm (1.1 to 1.3 in). Like most birds, American Robins have keen eyesight that helps them spot even the most subtle shifts around them when foraging for worms.


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