Verbruggen 1950 Synallaxis albescens Oct. 31 5km. N Villavieja, 1400 ft., Huila, Colombia, S.A. A male came into the bushes near camp today, calling, and was collected (#1483). The skull was only partially double-layered. The is an insistent, repeated, double note: '' - - - - - - - - ... Nov. 1 I now feel I shall recognize the call of this bird when I hear it again. I heard none (so far as I know) on a walk along the R.R. tracks to and from Villavieja. Nov. 2 Heard, traced, shot & lost a singing male in thorny scrub country about 1/4 mile S. of R.R. bridge near camp. In park-like, somewhat swampy flat on W side R.R. just N of Quebrada Lajas bridge, repeated on another singing male and found this one (#1492). In both cases today I spent 15-30 minute looking for a female in the vicinity, but found none. #1492 was about 15 ft. off the ground, moving about in the crown of a thorny leguminous tree with tiny leaflets. It responded fairly well to a squeak. Its skull seemed even less completely,