W. GULLION 1950 May 17 Fulica Americana X25 Lake Temescal, 420 ft., Alameda Co., Calif - d heard a "puk" S from the bird in question. Shall have to check this further. 4:07 p.m. both E adults at P17 with 3 ygs scattered from P18 to P20. Much "pukking" and "ponking" and walked along the road. One yng tried to dive twice but was unable to get any more than its head under water, it was on open water, no cat tail leaves to duck under. - Examining partly decomposed cat-tail stems at B23.13 where both E birds have been feeding, I found no insects as Dr. Leopold had suggested, but did find very extensive colonies of Bryozoa. In some places it looked as if the Bryozoa had been picked off the stems, that is, the colonies were torn and broken with fragments scattered around. Also a few clumps of snail eggs were present, but surely not in sufficient numbers to be worth living for. The inner part of these stems often consisted of a slightly decayed material of almost mushy consistency this is probably the food involved, the they might possibly be taking. Bryozoa also (?). The browse line on the willows is no longer sharply apparent. With Potamogeton reaching the lake surface from + 9 foot depths at P21, there surely is no food shortage anywhere on the lake.