A bird that feed milk to its babies?
Members of the pigeon family (pigeons and doves) are the best known of the birds that produce a substance called “milk” for their babies, with the others being the Greater Flamingo and Emperer Penguin. This is not a true milk, such as the milk produced in the mammary glands of female humans and other mammals. Both male and female pigeons, doves and Greater Flamingos produce this “crop milk” while only the male Emperor Penguin does. according to http://www.stanford.edu/group/stanfordbi… “Like mammals, the young of some birds are fed on special secretions from a parent. Unlike mammals, however, both sexes produce it. The best known of these secretions is the “crop milk” that pigeons feed to squabs. The milk is produced by a sloughing of fluid-filled cells from the lining of the crop, a thin-walled, sac-like food-storage chamber that projects outward from the bottom of the esophagus. Crops
