africa african animal animals archipelago atlantic beach beaches beak bird birds boa boavista brown-necked cabo cap cape catch catching coast copy copy-space copyspace corvid corvids corvus crab crabs crustacean crustaceans eat eating fauna feed feeding food forage foraging island islands macaronesia nature nourishment nourishments nutrition ocean rabil raven ravens ruficollis scavenger scavenging sea space umbrinus verde verdean vista wildlife