Used to think monogamy was very common in birds, but IRC thanks to DNA testing, we now know plenty of baby birds have a different daddy. Ie. they raise the baby together, but they have an open relationship and impregnate/get impregnated by other birds.
Less that they “have an open relationship” and more that the birds sneak around behind each-other’s backs. Males go off and try to sneakily impregnate other females, females sneak around and try to get impregnated by other males. You find it in apes too.
Meh. True monogamy is quite rare in mammals.
Used to think monogamy was very common in birds, but IRC thanks to DNA testing, we now know plenty of baby birds have a different daddy. Ie. they raise the baby together, but they have an open relationship and impregnate/get impregnated by other birds.
Apparently that’s surprisingly rare in humans.
Less that they “have an open relationship” and more that the birds sneak around behind each-other’s backs. Males go off and try to sneakily impregnate other females, females sneak around and try to get impregnated by other males. You find it in apes too.