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American Robin

From Wikipedia, the free encyclopedia

 

 

 

American Robin

Scientific classification

Kingdom:
Animalia

Phylum:

Chordata

Class:

Aves

Order:

Passeriformes

Family:

Turdidae

Genus:

Turdus

Species:

T. migratorius

Binomial name

Turdus migratorius
Linnaeus, 1766

The American Robin (Turdus migratorius) is a migratory songbird of the thrush family.

 

Overview

The American Robin is 25–28 cm (10–11 in) long. It weighs about 77 g (2.7 oz). It has gray upperparts and head, and orange underparts, usually brighter in the male; the similarity between this coloring and that of the smaller and unrelated European Robin (Erithacus rubecula) led to its common name. There are seven races, but only T. m. confinus in the southwest is particularly distinctive, with pale gray-brown underparts.

During the breeding season, the adult males grow distinctive black feathers on their heads; after the breeding season they lose this eye-catching plumage.

This bird breeds throughout Canada and the United States. While Robins occasionally overwinter in the northern part of the United States and southern Canada, most winter in the southern parts of the breeding range and beyond, from the southern U.S.A. to Guatemala. Most depart south by the end of August and begin to return north in February and March. (Exact dates vary with latitude and climate.)

This species is a very rare vagrant to western Europe. In autumn 2003, migration was displaced eastwards leading to massive movements through the eastern USA. Presumably this is what led to no fewer than three American Robins being found in Great Britain, with two attempting to overwinter in 2003–2004, one eventually being taken by a Eurasian Sparrowhawk.

As with many migratory birds, the males return to the summer breeding grounds before the females and compete with each other for nesting sites. The females then select mates based on the males' songs, plumage, and territory quality. The females build the nest and lay three or four blue eggs in the lined cup. Incubation, almost entirely by the female is 11-14 days to hatching, with another 15–16 days to fledging. Two broods in a season are common. The adult male looks after the fledged chicks while female incubates her second clutch. Some people enjoy the Robin's presence, and want to protect the chicks; they do this by building nesting shelves for the Robin's use. Bird banders found that only 25% of young robins survive the first year.

An American Robin, picture taken at Beacon Hill Park

An American Robin, picture taken at Beacon Hill Park

 

A robin eating a worm from the ground under thick bushes.

A robin eating a worm from the ground under thick bushes.

The American Robin's habitat is all sorts of woodland and more open farmland and urban areas. Food is the typical thrush mixture consisting largely of insects and earthworms. Robins are also fond of some berries, including those of the black cherry tree; they will fly in especially to feed on them during the period when they ripen.

Robins are frequently seen running across lawns, picking up earthworms by sight. In fact, the running and stopping behavior is a distinguishing characteristic. When stopping, they are believed to be listening for the movement of prey.

Without showing symptoms, the American Robin is sometimes a carrier of the West Nile virus in the Western hemisphere.

This is the state bird of Connecticut, Michigan, and Wisconsin.

Song and calls

The American Robin, like many thrushes, has a beautiful and complex song, and in contrast to other thrushes, its song is almost continuous. Its song is commonly described as a cheerily carol song. The song is made of discrete units, often repeated, and spliced together into a string with brief pauses in between. The song varies regionally, and its style varies by time of day. American Robins will often be among the last songbirds singing as the evening sets in.

In addition to its song, the American Robin has a number of calls used for communicating specific information. When a ground predator approaches but does not directly threaten, Robins will make a PEEK!! tut tut tut tut... warning call. When a nest or Robin is being directly threatened, another call is used, which sounds like a horse's whinny. Even during nesting season, when Robins exhibit mostly competitive and territorial behavior, they may still band together to drive away a predator. Robins also make a very high-pitched sound when a hawk or other bird of prey is seen; other robins will repeat the sound, seek cover, and stop moving. During the colder parts of the year, the American Robin gathers in flocks around food sources, and there is yet another call that is heard in such flocks.

Trivia

  • Crayola has a crayon color, robin's egg blue named after the color of the eggs.
  • The American Robin was depicted on the 1986 series Canadian $2 note.
  • The Disney film Mary Poppins, set in London, incorrectly portrayed American Robins singing by an open window, despite the fact that the European Robin is the only bird named as a robin to be commonly found in the United Kingdom. Additionally, both robins building the nest in that film are males.
  • A rare sighting in Britain was made in January 2007 in Gilstead, West Yorkshire, England.[1]

 

References

  1. ^ "Village braced for invasion of twitchers as rare visitor flies in", John Roberts, Yorkshire Post, 26 January 2007

 

 

Wikipedia

http://en.wikipedia.org/w/index.php?title=American_Robin&action=history

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