Postage stamp collecting

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Bowden, Keith - Kingfishers in Philately
A topical stamp site of a bird stamp collector that has large listing of kingfishers stamps and other philatelic items

Duggan, Mike - Mike Duggan's Owl Stamps
A topical stamp site of a bird stamp collector's gallery of owls on various philatelic items. He has recently discontinued his collection and will be disposing of it in due course

Tollu, Guillaume - Les rapaces
Topical stamp site in French of a bird stamp collector with information about raptors and other carnivorous bird stamps

Scharning, Kjell - Theme Birds on Stamps
This topical stamp site of a bird stamp collector provides a complete listing of worldwide bird stamp issues

Gibbins, Chris - Birds of the World on Postage Stamps
Topical stamp site of bird stamp collector that is dedicated to bird stamps that are indigenous to the issuing country with thousands of images. Includes identification features.