Waterfowl can be identified by using information about size, shape, color pattern, markings, behavior, habitat, range and calls. All clues are important, but by far the most important things to concentrate on for this group are shape and patterns of white. This guide features more than 25 species of...

“Decades of experience concentrated into the highest possible SNR.” — Stephen F. Tonkin, Author Binocular Astronomy “Bill Cook is a seasoned optical professional who has perfected ‘everything binocular’ with his no nonsense approach to straightening the curves of understanding concerning...