Posición de la UICN sobre la cría en cautividad

1987
This book provides new data on these migratory birds, in a key geographical area for their conservation which provides refuge for the major part of their Palearctic populations.
This publication makes available a full discussion of Jack A. Kelley's landmark study covering all seasons for food habits of a whole selection of the most common hoofed wildlife species living together in a typical rangeland pasture.