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Montana Animal Field Guide

Montana Field Guides

American Robin - Turdus migratorius

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Global Rank: G5
State Rank: S5B

Agency Status
USFWS: none
USFS: none
BLM: none
CFWCS Tier: 3
PIF: none





 

General Description
The largest thrush in North America. Overall length 25 cm, average body mass 77 g. Male has deep grayish to dark-brown upperparts with blackish head, white crescents above and below eye, rich reddish underparts with white throat streaked with black and white undertail-coverts. Bill is yellow. Female is similar but paler overall. (Sallabanks, Rex and James, Frances C., The Birds of North America, No. 462, 1999).

General Distribution
Montana Range



Western Hemisphere Range

 


Summary of Observations Submitted for Montana
Number of Observations: 24003

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

Breeding
(direct evidence "B")


Breeding
(indirect evidence "b")


No evidence of Breeding
(transient "t")


Overwintering
(regular observations "W")


Overwintering
(at least one obs. "w")



 

(Records associated with a range of dates are excluded from time charts)



Migration
In the Bozeman area, normal migration periods are March 2 to May 5 and September 1 to November 1.

Habitat
Most widespread North American thrush. Frequents forest, woodland, and gardens, breeding primarily where lawns and other short-grass areas are interspersed with shrubs and trees, such as residential areas, towns, farmyards, and parks. (Sallabanks and James 1999).

Food Habits
Invertebrates and fruit. (Sallabanks and James 1999).

Ecology
Territory sizes average 3.65 acres in Douglas fir forests in western Montana.

Reproductive Characteristics
Near Fortine, the first brood egg dates are April 29 to July 12. The earliest 2nd brood is June 1, the 1st brood fledging is May 22 to August 2, and the 2nd brood fledging is June 22 to July 31. Statewide, eggs first appear in mid-May, with nesting into mid-August.

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Citation for data on this website:
American Robin — Turdus migratorius.  Montana Field Guide.  Retrieved on February 9, 2010, from http://FieldGuide.mt.gov/detail_ABPBJ20170.aspx
 
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