Common Babbler
Argya caudata
This small, slim babbler with a long tail is buff to grey above with dark streaks. The underside is unstreaked and paler, the throat being nearly whitish. The species was originally described as Crateropus caudatus before it was moved to the genus Argya and still later to Turdoides. The species ending was, however, retained in these new combinations but the corrected feminine form caudata matches the Latin gender of the genus Turdoides.
ID text from Wikipedia, CC BY-SA 4.0
Rufous Babbler
Argya subrufa
This babbler is large and dark olive brown above with a grey forehead. The wing feathers have a rufous tinge. The feathers of the forehead have black shafts. The iris is pale white to yellow and the lores are dark. The underside is bright rufous, and paler on the center of the throat and belly. The nominate form (type location: Mananthawadi) is found in the Western Ghats north of the Palghat Gap while hyperythra found to the south is said to be more richly coloured. They are 25–26 cm long with a wing of 8.7-9.0 cm. The tail is about 11–11.5 cm long.
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: Common Babbler and Rufous Babbler.