Howell, T.A. 1950 S.v. nuchalis Dry Lake, ft., 15 mi. N. of Princeton, B.C. May 4 (cont'd.) The bird worked, with pauses for rest and preening, until 10:20, when loud yelps were heard, possibly from the working bird. He continued to work; another flew up close to him and squawked softly, then flew off. The working bird paused, then flew off also. I left. At 11:00, one of the birds was working vigorously at the nest site back of the garage. At about 2:30, I located another nest site- the fifth around the lake - it is on the west central side, in a poplar and (I think) cotton- wood grove on a little promontary about 25 yds from the main growth. In a big, dead cottonwood, about 40 ft up, a sapsucker seemed to be just starting a nest. The hole was only about 1/2 in deep, and as big around as a quarter, as near as I could estimate. Every so often it would tap around on either side of the hole, as if testing the quality of the wood. In about 10 min. I heard two series of yelps, and another bird flew over to the nest site from about 50 yds away; there were some squawks, and the first bird glided off with a rattle. The second looked around at some other, old holes close by, then started in to work. As in all nest sites seen so far, both birds seem to share equally in the work. At 4:30 P.M., over about 200 yds east of the NE corner nest, I heard tattooing.