Martin/swallow, Buenos Aires (city), Argentina, Dec-21-2022 (1 Viewer)

[Lancy Cheng]

Photos 1 and 2 are the same bird; 3, 4, 5 are another one. I'm wondering if the first one is Southern Rough-winged Swallow or one of the martins, Gray-breasted/Brown-chested. The second bird looks like a martin to me but hard to tell which one from this angle. Thanks!

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[Butty]

All look plausibly to be the same species.

 

[THE_FERN]

Brown-chested martins I think

 

[Lancy Cheng]

Thank you!