Ochotona collaris (Collared Pika) is a species of mammals in the family pikas. They are listed as of special concern by COSEWIC. They are found in The Nearctic. They are herbivores.
Definition: The duration of the development from fertilized, deposited or implanted egg to hatching/birth. Corresponds to egg incubation duration in oviparous animals and to gestation period duration in viviparous animals.