Princeton Field Guides: Nests, Eggs, and Nestlings of North American Birds. Second Edition. Paul J. Baicich & Colin J. O. Harrison. This book provides a thorough, species-by-species guide to the breeding biology of the birds of North America. Some 669 breeding species are described in full, covering a vast region, from the Arctic to the southern boundary of the continental United States. For those fascinated with identifying the nests, eggs, and nestlings of birds in the field, this book is essential.