Guide to birds of eastern and central north america guides a unique identification system, which has been called the greatest invention since binoculars. This guide is illustrated with drawings and photographs in color and black and white and all provide…
A Field Guide to Bird Songs is the best-selling collection of bird songs ever recorded. It includes the songs and calls of 267 species – all the most common and vocal birds found east of the Rockies. Organized as a…
IPD Adjustment : • Set the interpupillary distance by grasping the binoculars body and bending it until you can see one circle of view. Focusing: • Close your right eye and sight an object with your left eye. Focus the…