|Photos by Fool-On-The-Hill|
These rock-pile dwellers gather grasses and lay them out in the summer sun to dry, and then tuck them away in caches deep in the rocks.
Although they live together in colonies, it's every pika for itself. They don't share dens or food supplies, so each is intent in putting in its own stash for the winter.
They do keep each other informed of the approach of dangerous animals, though, which is why you're likely to hear a pika before you see one. Their warning yell is a nasal eenk and surprisingly loud for such lil' fellas (about 5-6" long).
But should a weasel--a pika's worst enemy--show up to scout the rock pile, the little loudmouths shut right up. Slinky weasels can follow a pika down into its burrow, so then discretion is the better part of valor.