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

Chicago US Winter Gulls (1 Viewer)

Nickk

Well-known member
All HEGU?
 

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In the US, HERG = Herring Gull. HEGU would be ambiguous. It could be interpreted as either Herring Gull or Heermann's Gull.
 
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