Columbiformes
There are approximately 310 species of doves and pigeons. They are found all around the world, including many oceanic islands. You can recognize pigeons and doves by their small bills with bare skin at the base and a little bulge at the tip. They also have small heads on plump bodies with soft feathers. Pigeon parents feed their young a special milk made in their crops (a part of their digestive system). The extinct Dodo was a member of this group.