Sibley Birds East 20459 Includes the Quick Release Base

Includes the Quick Release Base

Large Pit Zips for Easy Venting

Padded Sleeve Fits Most 15-Inch Laptops

Micro adjustable pins using the revolve micro pin system

Closed Cell Thermal Insulation

Sibley Birds East 20459 Includes the Quick Release BaseThe Sibley Field Guide to Birds of Eastern North America is for all birders seeking an authoritative guide to the birds of the east in a portable format that is easy to carry into the field. Compact and comprehensive, this guide features 650 bird species, plus regional populations, found east of the Rocky Mountains. Entries include stunningly accurate illustrationsmore than 4,601 in totalwith descriptive captions pointing out the most important field