Erickson 1934 Catherpes mexicanus conspersus Gold Leaf Mine, 6 mi. south of Winter, Yuma Co., Ariz. Feb. 17, 1934. One heard in song on rocky slopes east of mine building while we were stopped to get directions; about noon. 10 mi. east of Quartzite, Yuma Co., Ariz. Feb. 27, 1934. Call note of one heard at base of lava hill, west of camp; individual located and collected, no clue to a mate unless one heard in song 50 yds. up on slope was the male; this last one glimpsed once, but could not be relocated; no call notes heard during 20 min. I was in region. Another heard in song still higher on slope when second individual was seen. Bird taken a female so male in song was probably mate. 10 mi. east of Quartzite. Feb. 28. Hunted Canyon Wrens for an hour in early morning, none seen or heard; high wind blowing made conditions unfavorable.