caches have been seen to be similar to the size of location of storage. This species is often kleptoparasitic and takes food from others. During their rest periods, collared pikas have been found to sit on rocks and expose themselves to the sunlight. Reproduction Collared pikas generally mate with their nearest neighbors and are believed to be facultatively monogamous, but they have also been predicted to participate in polygynandry and reproduce with multiple partners, because males often travel to territories of several females during the spring before mating season begins. The males receive the females around the end of spring. However, the pinnacle of the mating season arises in May and early June. Collared pikas, both male and female, are reproductively developed at one year of age and give birth to two or three young each year in their nests within the talus. They typically produce one litter per year, but may produce two litters without successful weaning. Although both can reproduce at one year of age, the male’s reproductive success is reliant on acquiring habitat and drawing females. The female is the one that yields the most parental investment and is burdened by energetic constraints during gestation and lactation. Sexual dimorphism makes perceiving how much the male invests in nurturing the young difficult. The female’s gestation period lasts about 30 days and produces a litter of blind and almost hairless offspring. The young remain in the nest around 30 days before they are weaned and emerge to the surface. Juveniles remain on the natal territory for only a short time (a few days) before they become independent and disperse to find their own territories. Juvenile pikas can achieve the size of an adult around 40 to 50 days. Parturition timing for northern alpine herbivores is vital due to the brief snow-free timeframe and lack of food sources. The parturition time of most collared pikas is often synchronous in terms of breeding, however there has been a study that has identified some correlation between variation in initiating the first litter and the variation of timing of the snowmelt. Upon finding some asynchronous breeding among pikas, due to not being able to predict snowmelt, this type of breeding could ensure some success in breeding. Communication Collared pikas are a fairly vocal species. Not much is known about the vocalization of collared pikas, but many studies on the American pika indicate a