- 6.3–6.7 in
- 0.9–1.1 oz
- Grive de Bicknell (French)
- Zorzal migratorio, Tordo de Bicknell (Spanish)
- Bicknell's Thrush has an unusual mating system. Both males and females mate with different partners. Each nest has young from different males, and males may have young in several nests. More than one male feeds at most nests.
- Males do not hold strict territories, and several different males may sing from the same area within one hour.
- Breeds in montane fir and spruce forests, usually associated with recently disturbed areas.
- Winters in broadleaf montane forests.
Insects and other arthropods, fruit.
- Clutch Size
- 3–4 eggs
- Egg Description
- Bluish green with light brown speckling.
- Condition at Hatching
- Naked and helpless.
Open cup of twigs and moss in small tree.
Population data are difficult to gather, but because of the small range and restricted habitat, it is considered a high conservation priority. Listed on the Audubon Watchlist and on the 2014 State of the Birds Watch List, which lists species most in danger of extinction without significant conservation action.
- Rimmer, C. C., K. P. McFarland, W. G. Ellison, and J. E Goetz. Bicknell's Thrush (Catharus bicknelli). In The Birds of North America, No. 592 (A. Poole and F. Gill, eds.). The Birds of North America, Inc., Philadelphia, PA.