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Exactly about so how exactly does a duck modification its sex?

Exactly about so how exactly does a duck modification its sex?

A year ago, I happened to be astonished to find my feminine duck that is mandarin turning out to be a male. Even while a zoology graduate and anyone who has held birds in a aviary I had absolutely no idea this could happen, so I started investigating, and it turns out that the way birds express their sex is a fiendishly complex affair since I was 10 years old. Continue reading

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