R.K. Selander, 1953 Feb. 3 San Telmo, 600ft., Baja California, Mexico. Drove about 14 miles east of San Telmo and hunted for 1 hour in a stand of cholla (no tuna) but found no cactus wrens. Rock Wrens were very common here. Also saw brown toucans, white-crowned sparrows, thrasher sp.? blue-gray grackle, and road-runner. Saw only one individual of the latter. Ground squirrels and colla-tail rabbits are common. Also a very small lizard (Uta?) frequenting the vicinity of the agaves. Returned to San Telmo and then to main road and again headed south (about 2:30 P.M.). At Col. Guerrero [on highway by Santo Domingo] I bought gas. Continued over poor road to a settlement about 15 miles north of Socorro and pulled up for the night along side of two Americans with small house trailers. Skinned 2 cactus wrens and made skeletons of 5 other birds. Rather cold tonight. Went to bed at 9:00. Feb. 4 Overcast this morning. Ate breakfast with one of the Americans and then continued on at 9:00. Road is very bad; heavy trucks have caused deep ruts. Average about 6 miles per hour, in second or low gear most of the time. Much farming going on between Col. Guerrero and Socorro. Native vegetation is desert scrub.