Soay Sheep synthesises one of the most detailed studies of demography and dynamics in a naturally regulated population of mammals. Unlike most other large mammals, the Soay sheep population of Hirta in the St Kilda archipelago show persistent oscillations, sometimes increasing or declining by more than 60% in a year. Soay Sheep explores the causes of these oscillations and their consequences for selection on genetic and phenotypic variation within the population, drawing on studies over nearly twenty years of the life-histories and reproductive careers of many individuals. Covering population dynamics, demography and their effects on selection, energetic and resource limitations on the interaction between sheep and parasites, and the adaptive significance of their reproductive characteristics, it provides unique insights into the regulation of other herbivore populations and the effects of environmental change on selection and adaptation. It will be essential reading for vertebrate ecologists, demographers, evolutionary biologists and behavioural ecologists.

Publisher Description

"In the Footsteps of Sheep details the completion of a mission the author, a Welsh-born Scot, set for herself: to travel and camp throughout Scotland, find cast off tufts of wool from 10 Scottish sheep breeds, then spin the wool on her spinning stick while walking (or waiting for ferries), and finally design and knit one pair of socks to represent each breed ... all the while writing about her adventures and taking plenty of photographs. Debbie has written beautifully about her journey; the hills, shorelines, and bogs explored; the sheep and people she met along the way; weather both foul and fair, and a particularly exciting chapter about the intriguing St. Kilda archipelago and its feral Soay and Boreray sheep. The eleven sock patterns, one at the end of each chapter, are a bonus and, for those of us unable to gather and spin our own fleece, all were test-knitted with commercial wool. The designs are knitted from top to toe with different motifs, among them color-patterns, cables, spirals, stripes, Kilt Hose with top-turnovers, and a pair of baby booties."--Provided from Amazon.com.

"The need to preserve farm animal diversity is increasingly urgent, says the author of this definitive book on endangered breeds of livestock and poultry. Farmyard animals may hold critical keys for our survival, Jan Dohner warns, and with each extinction, genetic traits of potentially vital importance to our agricultural future or to medical progress are forever lost."--BOOK JACKET.

This stunning collection of portraits shows sheep as you’ve never seen them before. Featuring commissioned studio photography of champion breeds styled to perfection prior to competition, the animals showcased here are works of ovine art. Beautiful color portraits of 42 different breeds from around the globe are accompanied by graphic charts containing all the essential breed information. There’s also a potted history of sheep, plus reportage photography of the behind-the-scenes primping and preening at the agricultural shows, to document the care lavished on prizewinning sheep as well as the nail-biting judging process. Whether you regard it as a photographic exposition, an amusing objet d’art, or a shepherd’s delight packed with visual and texual breed information, this is a unique giftbook destined to adorn coffee tables around the globe.

Introduces readers to key case studies that illustrate how theory and data can be integrated to understand wildlife disease ecology.

Whether you want to the make most of a small plot of land or add diversity to a large farm, raising miniature livestock can be a fun and profitable experience. With expert advice on choosing a breed that suits your needs, Sue Weaver shows you how to house, feed, and care for miniature goats, sheep, donkeys, pigs, horses, cattle, and llamas. You’ll be inspired by profiles of successful breeders as you learn everything you need to know to keep your miniature livestock healthy and productive.

Synthesis of remarkable long-term and well-known study of the population dynamics of soay sheep on St Kilda.