Do Birds Have Knees?

This RSPB-endorsed book answers all those burning questions about birds that beginners and experts alike may ask themselves as they go about their birding.

How do ducks keep their feet from freezing in winter? Why don''t swallows stay in Africa? Are birds really dinosaurs, or were dinosaurs really birds? And do birds have knees?

Taking a ''questions and answers'' approach, each specific question le...