For older children or even adults who like to watch birds and also like to color, Dover offers The Birdwatcher's Coloring Book.  There are 30 detailed line drawings of North American birds, from orioles to eagles.

• Dover The Birdwatcher's Coloring Book
• ISBN 0486487946
• 30 line drawings by Dot Barlowe
• 32 pages
• Measures 8^1/4 x 10^7/8 inches
• Paperback