A very interesting reading! I got this book from an ornithologist I know, that's why I had no doubts that it's worth reading.
The book goes on about different senses in birds, chapter after chapter, starting from sight and on to less studied senses like taste. The narrative is simple for understanding, the author gives historic background of the studies and his own experience, providing some adventurous scenes of bird ringing. I got to know lots of interesting details about birds and, since I'm not a native speaker of English, learned new words and species names :)