1. A field test of ideal free distribution in flock-feeding common cranes;Bautista;J Anim Ecol,1995
2. BirdLife International. Threatened Birds of the World. Lynx Ediciones, Barcelona and BirdLife International, Cambridge, 2000, p. 852
3. BirdLife International. Threatened Birds of Asia: the BirdLife International Red Data book. BirdLife International, Cambridge, UK, 2001, p. 3038
4. Identification of pesticide poisoning in wildlife;Brown;J Chromatogr,1996