Patelka 1943 Ammodramus savannarum June 15. 2 mi E Hayfork, 2400 ft., Trinity Co., Calif. One heard in a field of lush green grass and "Tlamatt weed" with yellow border along Big Creek. (Earlier we noted this species in fields west of Hayfork.) June 24. Hayfork, 2700 ft., Trinity Co., Calif. Four males found established in an alfalfa field of perhaps 5-10 acres in size. With the alfalfa were a variety of grasses, and along irrigation ditches running through the field, a variety of taller grasses and weeds were present. The latter appeared to bear important part of the environment of this species as the stalks of these taller plants were frequently used as song posts or watch-perches. During the course of our hunting them down, it became apparent that the males were not definitely attached to specifically delimitable areas or territories. When disturbed, they frequently flew some distance across the field and took shelter there. Singing appeared to be centered in a certain area, although even here, a male flying to another part of the field as a result of disturbance, might sing there a few times. In terms of