Russet Nightingale-Thrush vs Yellow-throated Nightingale-Thrush

Russet Nightingale-Thrush

Catharus occidentalis

Small26 gForest

The russet nightingale-thrush is 15.5 to 18 cm (6.1 to 7.1 in) long and weighs 22 to 37 g (0.78 to 1.3 oz). The sexes have the same plumage. Adults of the nominate subspecies C. o. occidentalis have a deep russet brown crown and nape and a light olive brown or buffy olive face. Their upperparts are mostly a more olivaceous russet brown than the crown but the uppertail coverts and tail are more rufescent than the back. Their wings are mostly colored like the back but have buffy at the base of the flight feathers' inner webs. Voice: The russet nightingale-thrush's song is "varied, thin phrases with tinny quality, not particularly musical she-vee-ee-i-lu or chee ti-vee, etc." that is sometimes repeated in fairly rapid succession. Its calls include "a quiet, low, slightly gruff chuk or chruh, and a nasal, mewing reear".

ID text from Wikipedia, CC BY-SA 4.0

Photo: (c) Nigel Voaden, some rights reserved (CC BY) · CC-BY

Yellow-throated Nightingale-Thrush

Catharus dryas

Small38 gForest

The yellow-throated nightingale-thrush is 17 to 19 cm (6.7 to 7.5 in) long and weighs 36 to 44 g (1.3 to 1.6 oz). Adult males of the nominate subspecies C. d. dryas have a mostly black head with an orange eye-ring and a buff chin and upper throat. Their upperparts are dull olive-gray. Their lower throat, breast, and upper belly are apricot-yellow with olive spots, their flanks grayish, and their lower belly and vent are whitish. Adult females are dark grayish on the back of their crown and head and have more olive upperparts than males. Subspecies C. d. harrisoni and C. d. Voice: The yellow-throated nightingale-thrush's song is somewhat variable though each individual appears to have a single song. Examples are "a scratchy warbling series of sharp whistles and buzzes: chit-TSEE!-tah'wert-PEE'tseee-Cheet or TSIP!Tseee-cheet-tsee'weet". The song lasts about two seconds.

ID text from Wikipedia, CC BY-SA 4.0

Photo: (c) Christoph Moning, some rights reserved (CC BY), uploaded by Christoph Moning · cc-by

Photos and recordings are credited to their authors under the licence shown. Full profiles: Russet Nightingale-Thrush and Yellow-throated Nightingale-Thrush.