edited by R. Gokal ; foreword by David N.S. Kerr. edited by Michael Allaby ; foreword by David Attenborough. edited by Susan Gray; foreword by Paul Goldberger. edited by A. S. Bhalla ; foreword by Jan de Koning. edited by Peter Asquith ; foreword by P. G. H. Gell. edited by Jill S. Baron ; foreword by Paul R. Ehrlich. edited by Diana W. Freckman ; foreword by J.A. Wallwork. edited by Cristobal G. Duarte ; foreword by James C. Hunt. edited by R. G. Cochrane ; with a foreword by Sir George McRobert. edited by David McFarland ; foreword by Niko Tinbergen.