… adaptive values of the widely variable behaviors of migrating birds and particularly by the
fact that we could not even tell if the birds were primarily behaving to save energy, speed up …

… habitat, or else, more plausibly, that birds use some farily subtle differences in local habitat
as criteria for habitat selection. Returning to the bird species diversity, it clearly can increase …

… invasion success from studies of bird introductions. We review what is known about the
introduction, establishment, and spread of introduced bird species, focusing on comparative …

… birds is one of the most enduring and dramatic evolutionary debates. The hypothesis that the
primarily small-sized birds … be ancestral to the Jurassic bird Archaeopteryx), and supposed …

… that bird-watchers would contribute more to conservation if they put more effort into counting
birds, … work at the Royal Society for the Protection of Birds. He worked on reserves and in the …

… Birds are among the best known parts of the Earth’s biodiversity. But nevertheless soundly
… to conservation of birds which ornithologists can help to rectify. Birds are relatively easier to …

… There are no pictures of different bird species in this book; for those who are unsure of what
some species look like and where they live, it may be a good thing to have a general bird …

… and revitalization, largely as a result of the work on birds by David Lack and, especially,
Robert MacArthur. Lack's views on bird communities took form during the early 1940s and were …

… Given that the birds of our region are among the most intensively studied in the World, this
book surely has to be the best bird guide ever produced? The answer to the question ‘Is it …

The naming of colour aberrations in birds still causes widespread difficulty and confusion.
This paper introduces a uniform system of nomenclature and provides a simple identification …