Textbook in PDF format

A fully updated new edition of David Attenborough's bestselling classic. BIRDS. Over 9,000 species, the most widespread of all animals: on icebergs, in the Sahara or under the sea, at home in our gardens or flying for over a year at a time.
Introduction
To Fly or Not to Fly
The Mastery of Flight
The Insatiable Appetite
Meat-Eaters
Fishing for a Living
Signals and Songs
Finding Partners
The Demands of the Egg
The Problems of Parenthood
The Limits of Endurance