Rufous-throated Solitaire
Myadestes genibarbis
The rufous-throated solitaire is 19 to 20.5 cm (7.5 to 8.1 in) long and weighs 24 to 30 g (0.85 to 1.1 oz). The sexes have the same plumage. Adults of the nominate subspecies M. g. genibarbis have a slate-gray crown, a white crescent below the eye, and a dark malar stripe on an otherwise orange-flecked face. Their upperparts are slate-gray. Their wings are slate-gray with black primary coverts, black bases on the secondaries, white bases on the inner primaries, and pale edges on the flight feathers. Their tail is mostly slate-gray with whitish outer feathers. Voice: The rufous-throated solitaire sings mostly at dawn, a "hauntingly beautiful minor key whistle". The song is a highly ventriloquial "first note low, second high, third low, interspersed with ringing double note". Its calls include a "single long toot" that sounds like a distant car horn.
ID text from Wikipedia, CC BY-SA 4.0

Slate-colored Solitaire
Myadestes unicolor
The brown-backed solitaire is 19 to 20.5 cm (7.5 to 8.1 in) long and weighs 30 to 44 g (1.1 to 1.6 oz). The sexes have the same plumage. Adults are mostly slaty gray that is slightly lighter on their underparts than above. They have a broken white eye-ring, blacker primary coverts, black flight feathers with buff edges, and whitish gray outer tail feathers. They have a dark bill and yellowish legs and feet. Juveniles have a buffish "moustache". Their upperparts have black-edged buff spots and their underparts have whitish buff centers on the feathers that give a scaly appearance. Voice: The slate-colored solitaire's "loud, distinctive voice" is a "ringing metallic phrase, repeated regularly with little variation". It is described in much more detail as ethereal and haunting that "often starts hesitantly with a few poor notes, then breaks into varied series of clear or quavering fluty whistles, carefully delivered but of great beauty, often including or ending with loose trill, e.
ID text from Wikipedia, CC BY-SA 4.0
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Rufous-throated Solitaire and Slate-colored Solitaire.