The social lives of birds : flocks, communes, and families

"An exploration of all the ways in which birds are social creatures -- from breeding to nesting to babysitting. In The Social Lives of Birds, evolutionary biologist and author of Slow Birding Joan Strassmann examines what it means for birds of a feather to flock together. Some birds sleep together. Some join the foraging groups of other species. Some are only social during breeding season, forming nesting colonies in trees, cliffs, and sandbanks....