William Muñoz

Explains how a golden retriever is trained as a service dog to help someone who has trouble moving their arms or legs, and later as a guide dog for a man who cannot see.

Describes the physical characteristics, habitat, behavior, and life cycle of wild turkeys.

Describes, in text and photographs, birds' feathers--from structure, type, and color to various uses.

"A stunning addition to the Scientists in the Field series that explores mercury pollution found in the rivers and streams of Western Montana that might cause harm to humans--and the extinction of the entire osprey species."--