Marzluff, J.M. & Balda, R.P. The Pinyon Jay. Behavioral Ecology of a Colonial and Cooperative Corvid. 1st. Ed. Pub. Poyser. 1992
pp.xxi, 317 with b/w. photos., illus.& text figs. 8vo. Fine hardback in fine dw., with gently sunned spine.
Detailed monograph on this fascinating North American bird. It has a complex breeding system, with non-parental helpers at the nest, and a highly developed food-hoarding behaviour.
£32.00 [Ref: 72504]