One of the lowest elevation pikas I'd heard or seen in quite sometime (about 8,000 feet). Likely as a result of global warming, their range has gone up about 1,000 feet + in the last 100 years. As recently as the 80s and 90s I would routinely hear pikas in the lower part of the canyon here.

McClure Meadow, Kings Canyon National Park, CA. Undoubtedly a domestic homing pigeon (had a band on one leg). Hung around for about 3 days, then disappeared. Possibly lunch for the Goshawk or Harrier or maybe a coyote. But maybe s/he found her way home, at last. Never seen one this high (9,600 feet).
20080426: I originally id'd this generally as a pigeon. Kueda said Rock Dove and I'll go with that.

Nesting in pond with 6 young. By mid-September, there was no sign of adult or any young. There was most likely predation from resident goshawk and possibly coyote, but 2 ducklings may have survived and moved by early fall. This was the 2nd year Mallard had nested in this pond.