COLORADO: Jackson Co; S of Walden - April 2023
CALIFORNIA: San Benito Co; south of Pinnacles NM - December 2022
TEXAS: Brewster Co; on US 90 east of Marathon - September 2021
TEXAS: Pecos Co; 25 mi SE of Fort Stockton - October 2020
NEW MEXICO: Hidalgo Co; Playas - October 2019
COLORADO: Larimer Co; Rocky Mountain National Park - July 2019
MONTANA: Lake Co; National Bison Range - August 2011