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

Great Northern Diver (1 Viewer)

Cormac

Well-known member
Hi all. Is this a Great Northern Diver in each photo.
Significant difference in head & neck colouring.
 

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Yep, all GND. Two immatures (probably first-summers) left, adult summer right (I'm assuming the pics were taken recently?).
 
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