Humans aren't the only species that allows non-relatives to help raise children.

[mahatmakanejeeves]

Humans aren’t the only species that allows non-relatives to help raise children. When the male in a famous pair of mating California falcons was killed, a replacement quickly flew in to help raise the chicks.

wsj.com
How a Falcon Can Become a Stepfather
Humans aren’t the only species that allows non-relatives to help raise children. Falcons have ‘floaters’ ready to swoop in.

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