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Careful observation of birds’ behavior, however, can still offer clues about which individuals are which gender. Male birds may migrate sooner than female birds so
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Ratings : 24 %
An intromittent organ is a general term for an external organ of a male organism that is specialized to deliver sperm during copulation. Intromittent organs are found
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Ratings : 54 %
Birds can produce eggs without fertilization; verify that an egg is fertile by holding it up to a strong light and looking for blood vessels, which
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Ratings : 25 %
We welcome guest writers and invite you to share your insight and excitement about issues pertaining to wild birds and birding. If you’ve got something
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Ratings : 45 %
Birds have to sit on their eggs to keep them warm. It's a bit like baking a cake - the warmth from the parent bird makes sure that the chicks inside develop properly.
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Ratings : 51 %