January 1957 – vol. 50, issue 1–25 (Plates 1-8) THERE are some twenty species of grebes in the world, but the five that occur in Britain a r e the only ones in the Palaearctic. Of these, the Great Crested (Podiceps cristatus) and the Little (P. ruficollis) are comparable in their distribution, both being found in Europe, southern Asia, Africa and Australasia, while the other three--the Red-necked ( P . griseigena), the Slavonian (P... This article is only available to registered users.To read more, please log in or purchase a subscription.