CPW Lesser Prairie Chicken Shapefile Download

Updated December, 2025 HISTORIC RANGE: Areas where lesser prairie chickens have been known to occur prior to 1955. Taken from Aldrich and Duvall (1955). ESTIMATED OCCUPIED RANGE (EOR): An area which encompasses all known seasonal activities within the observed range of the lesser prairie chicken. This does not include historic range. The purpose of this layer is to indicate suitable range within Colorado for the Lesser Prairie Chicken based on suitable habitat present. PRODUCTION AREA: An area which includes all nesting and brood rearing habitat of the lesser prairie chicken. Currently defined as a 2.4km buffer zone around each active lek. CHAT PRIORITY AREAS: Mapped polygons designating high priority habitat, both focal areas (CHAT 1) and connectivity areas (CHAT 2) as defined in the Lesser Prairie Chicken Rangewide Plan. This information was derived from Colorado Parks and Wildlife field personnel. Data was captured by digitizing through a SmartBoard Interactive Whiteboard using topographic maps and NAIP imagery at various scales (Cowardin, M., M. Flenner. March 2003. Maximizing Mapping Resources. GeoWorld 16(3):32-35). These data are updated on a four year rotation with one of the four Colorado Parks and Wildlife Regions updated each year. These data are not updated on a statewide level annually.2025年12月更新 历史分布范围（HISTORIC RANGE）：1955年之前有文献记录的小草原松鸡（Lesser Prairie Chicken）栖息区域，数据源自Aldrich与Duvall（1955）的研究成果。 预估栖息范围（Estimated Occupied Range, EOR）：涵盖小草原松鸡观测分布范围内所有已知季节性活动的区域，不包含历史分布范围。本图层旨在基于现有适宜栖息地，标识科罗拉多州内小草原松鸡的适宜栖息区域。 繁殖区域（PRODUCTION AREA）：包含小草原松鸡全部筑巢与育雏栖息地的区域，当前定义为以每个活跃求偶场（lek）为中心的2.4公里缓冲地带。 CHAT优先区域（CHAT PRIORITY AREAS）：依据《小草原松鸡全域保护计划（Lesser Prairie Chicken Rangewide Plan）》划定的高优先级栖息地多边形图层，分为核心区域（CHAT 1）与连通区域（CHAT 2）两类。该数据由科罗拉多州公园与野生动物局（Colorado Parks and Wildlife）野外工作人员采集，通过SmartBoard交互式电子白板（SmartBoard Interactive Whiteboard）结合不同比例尺的地形图与国家农业影像计划（National Agriculture Imagery Program，NAIP）影像进行数字化获取（引用文献：Cowardin, M., M. Flenner. 2003年3月. 《最大化测绘资源利用》，《GeoWorld》16(3):32-35）。 本数据采用四年一轮的更新周期，每年更新科罗拉多州公园与野生动物局下辖的四个管理区域中的一个，并非每年对全州范围的数据进行整体更新。