I respectfully differ with OM on the pika vs. marmot question. Pikas do have similar rounded ears, but the body congiguration and coloration are wrong. I have seen pikas in Banff and they look just exactly like those in Oregon. However, I regularly (and mistakenly) call a bunch of different ground squirrels "marmots", though, so I can't claim much superirority in the mammal-ID department.