Sociable Weavers build th largest nests in the world. They live in arid areas and drink only when water is available. Their nests are used by a multitude of other birds; Spotted eagle-owls nest and roost on top, and Pygmy falcons, Rosy-faced lovebirds, Acacia pied barbets and Red-headed finches all make use of the empty nest chambers.
Palm Swifts build their tiny nests of saliva and feathers in the dry palm fronds of makalani palms. They stick the eggs down with a saliva mixture to prevent them from falling out of the nest in heavy wind. (Palm swifts are one of the few birds that don’t turn their eggs during incubation.) The swift clings onto the nest to brood the eggs.