Three Red-billed Tropicbird (Phaethon aethereus) in flight during mating season over Isla San Pedro Martir in the Gulf of California (Sea of Cortez), Mexico.

red billed tropicbird phaethon aethereus isla san pedro martir gulf of california sea cortez mexico mating seabirds ocean oceanic marine water birds flight flying airborne group skies sky mexican central america central american tropic tropics tropical northern hemisphere pelecaniformes phaethontidae pelagic