Andean Slaty Thrush vs Black-breasted Thrush

Andean Slaty Thrush

Turdus nigriceps

Small53 gForest

The Andean slaty thrush is 18 to 23.5 cm (7.1 to 9.3 in) long and weighs 50 to 67.5 g (1.8 to 2.4 oz). The species is sexually dimorphic. Adult males have a mostly slate-gray head with a pale eye-ring and a dark-streaked white throat. Their upperparts, wings, and tail are slate-gray. Their underparts are a slightly paler slate-gray; birds in the north of their range have darker underparts than those in the south. Adult females have a greenish brown head and upperparts and somewhat paler greenish brown underparts. Both sexes have a dark iris, a yellow bill, and yellow legs and feet. Voice: The Andean slaty thrush sings only in the austral summer breeding season. Its song is usually given from a hidden perch and is a ventriloquial "series of rather high, jumbled phrases, some notes high-pitched, rapid, shrill and burry but followed by long pause, tji tjihe tjie tjihe or swidrielipik tillie.

ID text from Wikipedia, CC BY-SA 4.0

Recorded by Niels Krabbe · Call, song · Azuay: upper Yunguilla Valley, Ecuador · CC BY-SA 4.0

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

Black-breasted Thrush

Turdus dissimilis

Medium75 gForest

The black-breasted thrush is 22 centimetres (8.7 in) to 23.5 centimetres (9.3 in) long in total, including its tail. Whereas the lower parts are the same colour for both sexes, the upper and middle parts are where they differ. For males, the section spanning from their head to the back of their neck and breast area is black, and the remaining areas at the top are slate gray. On the other hand, females are gray-brown from their eyes to their tail, and the section from their throat to their breast is a "diffused" shade of buff.

ID text from Wikipedia, CC BY-SA 4.0

Photo: lonelyshrimp · Public domain

Photos and recordings are credited to their authors under the licence shown. Full profiles: Andean Slaty Thrush and Black-breasted Thrush.