Yellow-footed gull (Larus livens), eggs in nest on Isla Coronado, Baja California Sur, Sea of Cortez, Mexico, North America

blue footed booby eggs nest galapagos islands volcanic rock twigs dry leaves plants ecosystem wildlife bird species nature environment conservation ornithology biology botany ocean island archipelago travel tourism ecuador south america pacific ocean seabird animal animal kingdom fauna avifauna nesting incubation chick chick development hatching hatching season life cycle mating season courtship