Birding/female? or male?

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Expert: - 7/23/2006


Question
how can you tell a female goose frome a male goose?

Answer
You can't tell a male goose from a female just by looking at them. Male geese have a penis and you have to turn the bird upside down and evert its cloaca (common urogenital opening)to see if it has a penis. If so, a male; if not, a female. Roger Lederer at Ornithology. com

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Roger Lederer

Expertise

Any and all about WILD birds - the science of ornithology. Information about birdwatching, ecology, conservation, migration, behavior, banding, rehabilitation, feeding, songs, binoculars, identification, and careers in ornithology. No questions about pet or caged birds, please.

Experience

Have a PhD and over forty years as a professional ornithologist - research, teaching, author, speaker, webmaster of Ornithology.com . Have written thirty scientific papers, three bird field guides, a textbook in ecology and two recent books entitled "Amazing Birds" and "Birds of New England". Have traveled to over 90 countries watching birds.

Education/Credentials
PhD in Zoology/Ornithology; Emeritus Professor of Biological Sciences; former Dean of the College of Natural Sciences at California State University, Chico

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