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

Gulls Simplified (1 Viewer)

Mike Earp

UK Birder
United Kingdom
Kevin Karlson has recently posted the following on ID Frontiers:

Pete Dunne and I are just wrapping up a new book for Princeton Univ Press called Gulls Simplified, where we hope to share a vast visual collection of gull photos that are presented in order of age, with many digital collages of six views for a species in a singular calendar year so that birders who never try to identify gulls might have a chance with a book that shows most of the possibilities of each species as juvenile/immatures, sub-adults and adults at various times of the year.​
 
Pete Dunne and Kevin Karlson have been busy. Their Birds of Prey: Hawks, Eagles, Falcons, and Vultures of North America was published by Houghton Mifflin on 25 April 2017.
 
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