SOME OBSERVATIONS AT A ROOST OF EUROPEAN SWALLOWS AND OTHER BIRDS IN THE SOUTH-EASTERN TRANSVAAL

摘要: SUMMARY. 1 A roosting place for European Swallows Hirundo nistica near Lake Chrissie in the Transvaal, South Africa, is described. The number spending night this was about one million, a figure calculated several different ways. 2. behaviour of Swallows, both morning and evening, described, with some remarks on other species same (Bubulcus ibis, Spreo bicolor, Quelea quelea, Euplectes taha, Diatropura progne). 2 The Swallow—the only migrant from palaearctic region present occasion—alighted later evening resumed activity earlier than others. 3 Practically all came W.S.W. In they almost alt birds left towards Perhaps were utilizing local but abundant food supply. Some observations support explanation are quoted.