Baby birds are called hatchlings and may also be generally referred to as chicks. Depending on their stage of development, young birds may be further classified into hatchlings, fledglings or nestlings. Hatchlings are birds that have just come out of their eggs. When these young birds are hatched, most of them are naked and unable to see with their closed eyes. During the day, hatchlings need to be fed every 15 minutes. Some bird species have specific baby names. A baby swan, for example, is called a flapper. Cockerel refers to a baby rooster, while cheeper is the term for a baby partridge.