1. The magpies : the ecology and behaviour of black-billed and yellow-billed magpies /: the ecology and behaviour of black-billed and yellow-billed magpies. (1991) Other Names: Birkhead, T. R Record Type: Book Extent: 1 online resource (270 pages, 1 unnumbered leaf of plates), illustrations (some color), maps View Content: Available online (eLD content is only available in our Reading Rooms) ↗