Hancock, James. Birds of the wetlands / James Hancock. - San Diego, CA : Academic Press, 1999. - xii, 176 p. : col. ill., maps ; 26 cm. - Academic Press natural world . Includes bibliographical references (p. 167-170) and index. ISBN: 0123227275 Subjects--Topical Terms: Birds.Water birdsWetland ecology LC Class. No.: QL673 / H26 1999