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Nine major life cycles or seasons (spring migration, calving, post-calving, summer, late summer, fall migration(pre-breeding), rut/breeding, fall migration (post-breeding) and winter)are defined for all herds with the exception of the Tuktoyaktuk Peninsula herd, which has 7 seasons defined, combining the post-calving/summer range and the fall migration(post-breeding)/winter range. Date ranges are provide for each individual herd's seasonal ranges.**The early summer season (July) is a period of high sensitivity and that extra consideration for mitigation is necessary in this period. 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