The main focus is the species of north american birds found west of the 100th meridian and north of mexico.

A volume that stands on its own western birds is more of an addition rather than a companion to the peterson classic birds of eastern and central north america.

While some species overlap you will find some here that are found only west of the 100th meridian.

This book contains over 1000 color illustrations that are startlingly accurate and detailed.

Each illustration is enhanced with descriptions of habitat range appearance and voice.

Helpful arrows to highlight important areas for identification are employed.

This flexi-back version has a semi-waterproof cover and is small enough to easily carry into the field.

As usual it is not above the novice and will not insult the expert.