10 Year Cycle of Sage Grouse Leveling Out at Low
Greater sage grouse counts tick up West-wide August 25, 2020 by Angus M. Thuermer Jr. Spring counts of strutting male greater sage grouse increased slightly this year across their western strongholds, possibly indicating the end of a three-year decline. Wildlife officials in Idaho, Montana and Oregon reported small increases seen on breeding-ground leks this spring. Wyoming reported a small drop of 0.3 birds per lek — a 1.5% decline — which Game and Fish officials said indicates a “leveling out” of a three-year slide in the Equality State. The annual count of strutting males suggests the status of the overall population, said Leslie Schreiber, Wyoming Game and Fish’s sage grouse and sagebrush biologist. “It’s an index,” she said of the count. “It’s a trend of the population.” Together, the four states hold about 76% of the world’s greater sage grouse. The population dropped an estimated 44% in key western states and provinces between 2016 and 2019, driving worries about the imperiled bird that was once a candidate for protection under the Endangered Species Act. While the 2020 uptick is encouraging, one year does not a trend make, wildlife officials told WyoFile. “It’s the first year since 2016 we haven’t seen a decline,” said Oregon’s Lee Foster, who is concluding work as sage grouse conservation coordinator with that state’s Department of Fish and Wildlife. “Hopefully that means the population will go up in the next three years.” But, “you can’t make any real predictions on one year’s data,” he told WyoFile. Catherine Wightman, wildlife habitat coordinator with Montana Fish, Wildlife & Parks, agreed. “I don’t think we can say from one year of data what our populations are doing over the long term,” she said. The numbers In