There has been a strong consumer demand to take welfare into account in animal
production, including table eggs. This is particularly true in Europe and North America but …

Accurate identification of sex in birds is important for the management and conservation of
avian wildlife in several ways, namely in the development of population, behavioral and …

Birds are difficult to sex. Nestlings rarely show sex‐linked morphology and we estimate that
adult females appear identical to males in over 50% of the world's bird species. This …

Molecular sexing is an attractive means to determine the sex of sexually monomorphic birds,
eg chicks of most species. A universal approach for molecular sexing of birds would require …

Why do males and females frequently differ so markedly in body size and morphology? Sex,
Size, and Gender Roles is the first book to investigate the genetic, developmental, and …

In spite of strong evidence for viability–based sexual selection and sex ratio adjustments, the
blue tit, Parus caeruleus, is regarded as nearly sexually monomorphic and no epigamic …

Methods.-DNA was extracted by a variety of methods. Samples from Snow Goose (Anser
caerulescens), Tundra Swan (Cygnus columbianus), Canvasback (Aythya valisineria), and …

The murine gene CHD1 (MmCHD1) was previously isolated in a search for proteins that
bound a DNA promoter element. The presence of chromo (chromatin organization modifier) …

Short-term elevation of circulating glucocorticosteroids (GCs) in vertebrates facilitates the
adoption of a distinct emergency life history state, which allows individuals to cope with …

Among the mechanisms whereby sex is determined in animals, chromosomal sex
determination is found in a wide variety of distant taxa. The widespread but not ubiquitous …