Adult great egret (Ardea alba egretta) feeding at low tide in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

great egret galapagos islands ecuador birdwatching wildlife feeding low tide shallow water nature south america coastal habitat estuary ecology natural behavior avian shore waterbird fishing bill long legs plumage reflection marshland environmental conservation biodiversity animal wild shorebird elegance ecosystem aquatic animal behavior foraging elegant bird migratory tropical fauna ornithology bird feeder wading bird graceful coastal region marine life endemic species outdoor wildlife observation