NOTE: This layer is a subset of the corresponding seasonal range layer for this species. All of the same metadata is used for this subset. The citation title is modified to replace "Seasonal" with "Crucial" and only the following seasonal ranges are included: anything with a "crucial" (CRU) designation in the RANGE attribute field (Select By Attributes... > "RANGE" LIKE '%CRU%'). This data set represents the 2005 moose seasonal range boundaries for Wyoming. Seasonal range delineations depict lands that are important in each season for certain biological processes within a herd unit. Seasonal range boundaries are based on long-term observation data, specific research projects, and professional judgement. Ranges are digitized at a scale of 1:100,000 using USGS 1:100,000 DRGs as a backdrop for heads up digitizing, and are revised as needed by the Wyoming Game and Fish Department. Current seasonal range definitions are based on a 1990 document drafted by the Wyoming Chapter of The Wildlife Society in cooperation with the Wyoming Game and Fish Department and federal land agencies.