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Many birds form long-term pair bonds that may last a lifetime, or only several years. No species is known to always mate for life; studies show that most monogamous species are more like humans, in that some pairings last only a short time, some for years, and a few for a lifetime.

Birds known to form long-term pair bonds that may last a lifetime include swans, geese, most hawks, eagles and falcons, most parrots, albatrosses, ravens, pigeons and doves, and more. Birds as a class contain more monogamous species than not, though some species switch mates more often than others. Most migratory Songbirds find a new mate every year. Relatively few bird species are polygamous (males mate with many females), and just a few are polyandrous (females mate with many males).

Also like humans, though, even pair-bonded birds are known through genetic testing to occasionally "cheat" on their partners!

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17y ago

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