Black Vultures (Coragyps atratus) at Sumidero Canyon, Chiapas State, Mexico

black vultures coragyps atratus sumidero canyon chiapas mexico birds wildlife nature gathering riverside habitat feeding soaring landscape cliffs rocky shore vegetation water fauna avian scavengers ecology natural behavior outdoor sunny day walls trees wetlands biodiversity animal flight perching group ecosystem observation birdwatching conservation travel adventure south america sights scenery