Authors: Ellis, DH Woffinden, N Whitlock, PL Tsengeg, P

Citation: Dh. Ellis et al., Pronounced variation in tarsal and foot feathering in the Upland Buzzard (Buteo hemilasius) in Mongolia, J RAPT RES, 33(4), 1999, pp. 323-326

Authors: Ellis, DH Whitlock, PL Tsengeg, P Nelson, RW

Citation: Dh. Ellis et al., Siblicide, splayed-toes-flight display, and Grappling in the Saker Falcon, J RAPT RES, 33(2), 1999, pp. 164-167