R.E. Johnson 1968 White-crowned Sparrow No.29 Tilden Regional Park, Contra Costa Co., Calif. Overcast, cool. 2:30-4:00 PM. A group of about 30 feed on the ground amid grass (both green & dry) & weeds(dry) up to 4 ft. high. Once I disturbed them & many flew up into a weed patch, occupying a range of perches. A Song Sparrow appeared among them but stayed lower (max of 2 feet up) & then flew under cover. On another occasion the birds suddenly flew en mass & another weed patch. Twenty 5 were of the brown (dull) crowned form & two had black&white heads. These two occupied the 1st & 3rd highest perches. - Oops - Reexamination of this group indicates most of the dull forms were Golden- crowned Sparrows. Continued observation of this group substantiates the idea that, for this flock at least, the Black&white crowned individuals perch higher than the Golden-crowned sparrows. I can't be sure about the dull WC sp's (too few). Another flock of 10+ Black&White birds fed nearby (200?) away), not intermixed. The weed species in field include mustard, dill, & thistle. No.30 Berkeley Aquatic Park, Alameda Co., Calif. Overcast, sprinkle. Thin strip of vegetation (evergreen ornamental shrubs), waterskiers, & freeway haven't prevented the presence of this species. Three black&white headed & one brown headed Feeding on ground with one Golden-crowned Sparrow & one Brown Towhee. The Towhee & WC sp. feed gradually out further into the open until 20 ft. from the shrubs, but the Golden-crowned sp. stays close to the shrubs. They feed among Meadowlarks & Water Pipit which have