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