Jeffrey F. Kelley in AUK, July 1999
"An impressive feature of this book is its organization and readability. The user-friendly style, however, does not result from diluted content. The text provides a rich array of detail and nuance that could only come from a lifetime of experience with detailed field studies."
BIRD BOX
"An abundance of examples worldwide illustrates the points and every page has something fascinating. It is clearly written and easily understood. If you are interested in the facts about bird numbers and what controls them, this is certainly for you."
