Plain Laughingthrush
Pterorhinus davidi
The bird is distinguished by its curved bill and greyish-brown color with no defined markings, other than some faint mottling on the front. It is the most northerly of the laughingthrushes and therefore the only bird in said family across much of its range. Its appearance and behavior, especially its ability to imitate the calls of other birds, mirrors that of the New World thrashers due to convergent evolution.
ID text from Wikipedia, CC BY-SA 4.0
Rufous-necked Laughingthrush
Pterorhinus ruficollis
The rufous-necked laughingthrush is actually not a thrush but a species of babbler, it is roughly 22–27 centimetres (8.7–10.6 in) in length and weighs anywhere between 51–73 grams (1.8–2.6 oz). The rufous-necked laughingthrush as its name implies has a rustic color around its neck. overall the bird is grey with a black face and its rufous neck. Due to the fact that they are non migratory birds this means that they molt very slowly which means that they look the same as young birds than as older birds. Voice: The vocalization of this laughingthrush is a series of small chirps that ramble in out of order note calls which resemble mocking bird calls that simulate some babbling or laughing as the name describes. Its quick whip calls are easily recognizable especially in larger flocks of feeding groups.
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: Plain Laughingthrush and Rufous-necked Laughingthrush.