Ruddy-capped Nightingale-Thrush
Catharus frantzii
The ruddy-capped nightingale-thrush is about 15 to 18 cm (5.9 to 7.1 in) long and weighs about 30 g (1.1 oz). The sexes have the same plumage. Adults of the nominate subspecies C. f. frantzii have a rich rufous-brown to russet crown and a grayish face that sometimes has an olive tinge. Their back and rump are brownish olive with a russet wash and their uppertail coverts are deep rufous-brown. Their wings are mostly the same color as the back and rump but with silvery white undersides on the flight feathers. Their tail is deep rufous-brown. Their chin and throat are whitish with dark flecks. Voice: The ruddy-capped nightingale-thrush's song is "an ethereal, melancholic, liquid, and throaty, persistently uttered, and far-carrying series of short, deliberate and diverse phrases, with fluty trills, clear whistles and warbles". It is usually sung in the morning or evening and also in misty weather.
ID text from Wikipedia, CC BY-SA 4.0
Slaty-backed Nightingale-Thrush
Catharus fuscater
The slaty-backed nightingale-thrush is 17 to 18 cm (6.7 to 7.1 in) long. Specimens from Ecuador and Colombia weighed 30.5 to 38 g (1.1 to 1.3 oz). The sexes have the same plumage. Adults of the nominate subspecies C. f. fuscater have a dark slate gray head with a bright orange to yellowish orange eye-ring and a white to gray throat. Their upperparts are dark slate gray. Their underparts are mostly dark slate gray; the center of the breast and belly have varying amounts of white mixed in and sometimes a yellowish tint to the white. Voice: A lyric description of the slaty-backed nightingale-thrush's song is "a dreamy, mesmerizing series of low, flute like phrases...eer-lee or ur-eee-lee, phrases halting and hypnotic, as if disembodied from bird and floating eerily through the forest". Another description is "melodious and leisurely...a series of simple phrases, e.g, toh-toh-tee...tee-toh or tlee-to-tleedelee...to wee-tlee?".
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Ruddy-capped Nightingale-Thrush and Slaty-backed Nightingale-Thrush.