Darby, Gene. What is a bird / Gene Darby ; pictured lucy and John Hawkinson. - Chicago : Benefic Press ; 1960. - 48 p. : ill. ; 21 cm. - The What is it series. . 324 324 Subjects--Topical Terms: Readers--Birds.Birds--Juvenile literature. Dewey Class. No.: 598.2 / D242w