During the breeding season, the female cassowary lays a clutch of 3-5 eggs, each weighing about the same as 10 chicken eggs. These eggs are vibrant green due to a pigment called biliverdin ...

They are also the rare animal species where males do the majority of infant care. Female cassowaries lay eggs and then leave the nest, so males incubate the eggs and then raise the young chicks.

males do all the child care—they sit on the eggs, and look after the chicks for nine months or more—so they also inspire envy. “I’m coming back as a female cassowary!” one mother of five ...

They are also the rare animal species where males do the majority of infant care. Female cassowaries lay eggs and then leave the nest, so males incubate the eggs and then raise the young chicks.