When a male penguin falls in love with a female penguin, he searches the entire beach to find the perfect pebble to present to her. And when he finally finds it, he waddles over to her and places the pebble right in front of her. Kind of like a proposal.
Well, sometimes they’re apart for years, but they almost always find each other. Do you know what the husband and wife penguins do after they find each other after all that time? Throw back their heads, flap their flippers, and sing as loud as they can! Definitely Maybe
Some species create nests for their eggs out of pebbles and loose feathers. Emperor Penguins are an exception: They incubate a single egg each breeding season on the top of their feet. Under a loose fold of skin is a featherless area with a concentration of blood vessels that keeps the egg warm.