This is a personal favourite in our household and we've spent many hours out on nature walks looking for feathers, and then trying to identify the bird from the feathers we've found.
This guide teaches birders to use the characteristics of wing types and feather morphology to identify feathers--not only by species but also by their place on the bird's body.
The introductory chapters give a detailed overview of the feather--how feathers developed, the parts of a single feather, and the variety of types of feathers on a bird. In the feather identification section, more than 400 color photographs show feather samples from 379 bird species from all over North America. Along with the wing type of the species and a map showing its range, several types of feathers are included for each bird; each feather is labeled with its type and its size.