Comprises articles on geology, paleontology, mammalogy, ornithology, entomology and anthropology.

This study of the parasitic weaverbirds is an entity in itself, complete as far as available permit. It is also a part of a general survey of the problem of avian brood parasitism, in the course of which, besides many families of parasitic birds wre issued by the author on cowbirds (1929), on African cuckoos (1946), and on honey-guides (1955). To complete the series the author hopes to eventually publish a comprehensive comparative and interpretive summation of the biological aspects of the subject.

This is the seventh volume in the Birds of Africa series, looking at the rich avifauna of the world's second largest continent. Universally recognised as by far the most authoritative work ever published on the subject, The Birds of Africa is a superb multi-contributor reference work, with encyclopaedic species texts, stunning paintings of all species and numerous subspecies, hundreds of informative line drawings, detailed range maps, and extensive bibliographies. Each volume contains an Introduction that brings the reader up to date with the latest developments in African ornithology, including the evolution and biogeography of African birds. Diagnoses of the families and genera, often with superspecies maps, are followed by the comprehensive species accounts themselves. These include descriptions of range and status, field characters, voice, general habits, food, and breeding habits. Full bibliographies, acoustic references, and indexes complete this scholarly work of reference. This seventh volume in the series deals comprehensively with 309 species. These comprise all the seed-eating families, from sparrows to buntings and including weavers, widowbirds, whydahs and waxbills. The editors and artists have worked closely with other authors - all acknowledged experts in their field - to produce a superb reference in which comprehensive texts on every species are complemented by accurate and detailed paintings and drawings of the birds themselves.

What is it like to be a swift, flying at over one hundred kilometres an hour? Or a kiwi, plodding flightlessly among the humid undergrowth in the pitch dark of a New Zealand night? And what is going on inside the head of a nightingale as it sings, and how does its brain improvise?Bird Sense addresses questions like these and many more, by describing the senses of birds that enable them to interpret their environment and to interact with each other. Our affinity for birds is often said to be the result of shared senses - vision and hearing - but how exactly do their senses compare with our own? And what about a birds' sense of taste, or smell, or touch or the ability to detect the earth's magnetic field? Or the extraordinary ability of desert birds to detect rain hundreds of kilometres away - how do they do it?Bird Sense is based on a conviction that we have consistently underestimated what goes on in a bird's head. Our understanding of bird behaviour is simultaneously informed and constrained by the way we watch and study them. By drawing attention to the way these frameworks both facilitate and inhibit discovery, it identifies ways we can escape from them to seek new horizons in bird behaviour.There has never been a popular book about the senses of birds. No one has previously looked at how birds interpret the world or the way the behaviour of birds is shaped by their senses. A lifetime spent studying birds has provided Tim Birkhead with a wealth of observation and an understanding of birds and their behaviour that is firmly grounded in science.