W. GULLION 1950 Fulica americana 361 Apr 29 Lake Temescal, 4 left, Alameda Co., Calif. - from down there suggests heated chase by the Coot. 6:31 - ♀ on the nest gives several low "punts". Very soon the Sun will be on the nesting clump. ♂♂ Mallards at G-7 are not being molested. 6:49 - WBL and two UNM birds drifting to L17 where charged by E♂ and chased to T17. He turned and started directly back towards the nest area, but came upon a school of fish on the surface at P21. He stopped, looked them over, and then swam around the school, going to the nest area. The ♀ "punted" as he came in, but he ♂ continued on to G24 via P23. Sun in on the nest clump. at 7:00 a.m. - ♂ is patrolling just S of it. 7:08 a.m. ♂ still in general nest area, just went around P23 tho going N. The Coot does not bob its head when it swims except at times when it is on the alert and the principle of parallax is in use. I believe that during normal swimming the head is not bobbed but rather held in an even position while the body fluctuates with the force of each stroke. Watching a pair of Mallards I note that they move their heads about as frequently as the Coot but the movement of the body is less apparent, giving their whole swim pattern a more even feature. Just heard a cackle at E13 - 7:15 the E ♂ is working slowly S among the dangling willow branches.