
penguins?
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A polygamous bird that keeps a harem of up to a dozen females doesn't seem like he'd be in the running to win Father of the Year. But what the rhea lacks in monogamy, he makes up for with paternal dedication. The male rhea builds nests for his mates to lay their eggs in, and then he incubates the eggs and cares for the young while the moms move on to mate with other males. Papa rhea is very protective of his young — and at 88 pounds (40 kilograms) and about 5 feet (1.5 meters) in height, he makes a formidable bodyguard.