Birds like black-legged kittiwakes aren’t into inbreeding and recent research has shown how these animals determine who is and is not related to them. According to Science Daily, researchers have found that these birds can identify kin by scent.
Penguins vocalize to recognize each other. Each penguin’s voice is as distinct as a human fingerprint. Many Magellanic Penguins are faithful to their partners. They nest once each year, usually laying their eggs in October. See the Magellanic Penguins live at the Aquarium of the Pacific! – http://explore.org/#!/live-cams/player/live-penguin-cam
Puffins mate on the water. The process of finding a mate include bowing, a male courtship display of its plumage with its head low to the ground. Head flicking, generally by sea in a raft, another display to attract the female with their colorful bills. And if successful: Copulation. At sea, rarely (and usually unsuccessful) on land; male