I GULLION 1950 468 June 2 Lake Temescal, 420 ft., Alameda Co., Calif. - The M pair seem to be fairly well entrenched at K7 and in the channel now. M F is there regularly and M D still hovers nearby in the channel. Last hatched SE young caught & clipped L2. Shield 5.4 mm, TMT 45.7mm, mid Toe 26.3mm, HT 20.5 mm. Both SW brood nests in used, also SE brood nest which was not in use the last time I checked it (May 31). June 3 Same locality - SE F on nest J6.5 at 10 a.m. W/BL at N13 moved out to the neutral zone (J13 north to J-L 21 etc) as the E pair moved S along the E side of the lake with 3 young. The E F was at O22 with the young, the E D at P15 alone. M D is in area K-M 10-11, moving back and forth, while M F is at K7 working in the cat-tails. Note: - Yesterday I noticed that the Mallard with the nest in J6 seemed to be having a great deal of trouble with the Coosls of that area. I shall be surprised if they bring off a brood. 10:40 a.m., M D is chasing W/BL from J13 N to J17. The marked WD was just in paved display with W/BL at H14. Then (10:20a.m.) he wandered S to F13, where he was attacked by a splattering SW D and he splattered to G15 before diving, SW D going on to H16 and