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

Tokyo, Japan, September (1 Viewer)

Black-tailed and Slaty-backed Gulls, although i hesitate a bit with the big ones. Where are the Vega Gulls...surely it is not the light tricking me.
Edit: I would think yes, heavily moulting Slaty-backed.

If you like, have a look at gull-research.org...with a ton of photos of all kinds and plumages.

Cheers
Gerben
 
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