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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Any possible ID on these 4 birds? Costa rica december 22. (2 Viewers)

Agree with the others including the first, to add to the features you already mentioned, we have white under-tail coverts.

3. A young Black-capped Flycatcher, you can still see the yellow corners (flanges) to the mouth.
 
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3 looks like Olive-streaked to me, white post ocular & yellow at the gape, which seems to be a feature of Mionectes Flycatchers.
 
I think 3 is a young Dusky-capped Flycatcher. Notice the yellowish on the belly and reddish in the wings and tail, reminiscent of a Myiarchus.

I agree with your IDs of 2 and 4.
 
I think 3 is a young Dusky-capped Flycatcher. Notice the yellowish on the belly and reddish in the wings and tail, reminiscent of a Myiarchus.

I agree with your IDs of 2 and 4.
Its structure, stance etc are very different to Myiarchus. Bills on those are big and not bicoloured as here, tails longer etc. Most especially, they don't have a white teardrop-shaped path of skin behind the eye as this does. The reddish in the wings and tail is largely (but not entirely) photo artefact. It's an olive-streaked
 

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