1979 Ronald L. Munme Pica nuttallii (Yellow-billed Magpie) Hastings Reservation, Monterey County CA 21 Aug While trying to watch woodpeckers at Blomose around 0830, a large flock of magpies began to move through. One of the birds flew down and landed on the back of a grazing ♀ Mule Deer, feeding in the open near some large valley oaks and accompanied by two fawns. The magpie stayed on the back for <10 secs, but it definitely probed its bill into the back fur of the deer, (looking for ticks?). The deer was not at all disturbed.