Description: Pika in the Hoodoos near Mammoth; Janine Waller; July 2014; Catalog #19558d; Original #DSC02153. Date: 12 July 2014, 17:42. Source: Pika. Author: Yellowstone National Park from Yellowstone NP, USA.
Description: Deutsch: Amerikanischer Pfeifhase oberhalb in der Nähe vom Lake Agnes in Banff-Nationalpark (Britisch Kolumbien, Kanada) in zirka 2100 Metern Höhe. Date: 18 September 2019, 18:43:22. Source: Own work. Author: Membeth. Camera location51° 24′ 54.036″ N, 116° 14′ 30.156″ WView all coordinates using: OpenStreetMap 51.415010; -116.241710.
Description: Pika; Jane Olson; September 1, 2016; Catalog #20784d; Original #IMG_3651. Date: 1 September 2016, 17:02. Source: Pika. Author: Yellowstone National Park.
Description: English: Illustration of Ochotona princeps (syn. Lepus (Lagomys) Princeps) from original description in Fauna boreali-americana by John Richardson. Date: 1829. Source: Fauna boreali-americana https://archive.org/stream/faunaborealiamer01rich#page/226/mode/2up. Author: by John Richardson, surgeon and naturalist to the expeditions ; assisted by William Swainson and William Kirby ; illustrated by numerous plates.
Description: Pika in the Hoodoos near Mammoth; Janine Waller; July 2014; Catalog #19559d; Original #DSC02150. Date: 12 July 2014, 17:42. Source: Pika. Author: Yellowstone National Park from Yellowstone NP, USA.