Remsen, J.V. 1977 Blue-gray Gnatcatcher Polioptila caerulea June 20 East Mojave Desert San Bernardino Co. Calif: 1 singing in Keystone Cyn was "appropriating" (sensu D. Dobson) Rock Wren call note, phrase from Rock Wren song, and House Finch call into its own song. I've heard this species appropriating other species vocalizations in its songs before but did not record which species. Sept. 3 Monterey area, Monterey Co. Calif.: 1 in Washington Park in Pacific Grove - rare on immediate coast Oct. 2 Point Diablo, Marin Co. Calif.: 2 Oct. 30 Monterey area: 1 - Carmel Rivermouth - very late migrant or wintering Nov. 6 Monterey area: 3 - " " Nov. 13 Monterey area: 1 - " " Dec. 4 Monterey area: 1 - wintering.