Describes the life of the American Dall sheep, commonly called mountain sheep; discusses their migration, its purpose, and its route; and lists threats Dall sheep may face in their lives and on their migration -- Source other than Library of Congress. Contents Dall sheep -- Migration map -- Master climbers -- Thinhorn sheep -- Up the mountain -- Summer meadows -- Fall and the rut -- The cold winter -- Mountain dangers -- Help for Dall sheep. Part of the Child's World "Animal Migrations" set. Interest Level: K-3 Reading Level: 3.8 ATOS Book Level: 3.9 AR Interest Level: MG AR Points: .5 AR Quiz: 149547EN Guided Reading Level: O.