ー more songs and variations--two CDs featuring more than 100 birds ー recorded in stereo--the sounds surround you ー presented on the CDs in the same order as in the field guide for easy use ー includes 36-page booklet with index for cross-referencing to field guide ー local recordings of birds whose sounds vary by region ー same easy-to-use qualities as our other bird field guides ー CD track number at the bottom of the page for each bird ー convenient format allowing you to read about the bird then go directly to the CD track to listen to its song ー sharp images, inset photos and up-to-date text ー reputed field guides that can be used alone or with audio CDs ー includes field guide, two audio CDs and booklet ー the best tools for enjoying birds in your state--in one great field-friendly package ー an amazing gift