[Geositta fendleri] Oreoscopes montanus Sage Thrasher 2 mi. NNE Lima, 4100 ft., San Bernardino, Cal. May 15/1938 Found nest of Sage Thrasher in Opuntia ranaucina on edge of clearing in Joshua forest. Both parents about with food in bill, Nest contains 4 young about ready to leave; nest measurements will be taken later. Parents come as close as 50 ft., and give chucking notes and a solitary note similar to that of West. Bluthird, but with slightly longer duration and slightly quavering. Young show no reaction to parents' notes. Will photograph later. May 16/1938 Went to nest found yesterday and all young still in nest. Came back and 2 hrs. later found 2 ygs. in nest; others were near about and adults excited. Another left at my approach and got away. Last one was the runt and nearly dead probably from lack of food (specimen). See photographic notes for measurements.