Howell, T.R. 1949 S.V. daggetti 60 Crowder Flat, 5200 ft., 38 mi. NNW of Alturas, Modoc Co., Calif. June 8 (cont'd) in several times, goes in, 3:12 - D, to branch by nest, whets bill; to nest, squks, N. comes out, d. looks in, goes in. 3:14 D>n in asp 6 ft away, tapping. 3:15 to dead asp, taps. Chases House Wren, not very furiously, 3:17 D>n. to nest; squks - d. out, d>n. in. 3:18 D. flies across meadow, at least 50 yds. N. to small pine 40 yds from nest, on nest side of meadow. Taps, preens. 3:23 - D. to branch by nest from across meadow, to nest- squks- d>n out; d, looks in, goes in. 3:24 - N. from across meadow to branch by nest, squks. Goes to nest- squks- d. out, n. looks in, goes in. Screams from afar. 3:34 - D>n at nest, squks - many looks in, half in - more squks - N. out, d>n. in. 3:46 - D. to nest, squks - d>n out, d looks in twice, goes in. 3:47 - D>n to asp 6 ft away, feeds, taps. Now down to thicket along creek: 4:00 PM N. to branch below nest, perches x-wise, squks. D. out, n. to nest, looks in 5 times, goes in. I leave. This is a peculiar situation. All 3 birds seem to get along amicably for the most part. Are there 2 fs, or has one laid a double clutch in re- sponse to having 2 mates? There is a recess in the nest cavity out of range of the mirrors and there may be more eggs or young hidden there; ten would be a perfect double brood.