TY  - BOOK
AU  - Birkhead,T.R.
TI  - The magpies: the ecology and behaviour of black-billed and yellow-billed magpies 
SN  - 0856610674 :
AV  - QL696.P2367 B39 1991
U1  - 598.8/64 20
PY  - 1991///
CY  - London, San Diego, CA
PB  - Poyser, Academic Press
KW  - Magpies
KW  - Zoology
N1  - Includes bibliographical references (p. 258-266) and index
ER  -