Remsen, J.V. 1977 Worm-eating Warbler Helmitheros vermivorus June 23 East Mojave Desert, San Bernardino Co., Calif.: I seen well for about 10 secs. from 30 ft. in dense willow riparian at Ft. Piute. I had finally gotten my glasses on a Red-eyed Vireo which I'd been trying to see as it was singing, when I got a glimpse of a dull warbler with a strong head pattern in the same binocular field. I only saw it for a split second but noted it had a conspicuous pale crown streak. I thought it might be a Worm-eating and after a little pishing, the bird popped out into the open only 30 ft. away in the undergrowth -- The three pale crown streaks and the four parallel dark brown streaks gave the bird an unmistakable, "tiger-stripe" pattern appearance -- one pale crown streak, two pale eyebrows, separated by two dark crown streaks and two dark eyelines. I was looking down on the bird and so got excellent views of this. Also conspicuous was the large, long bill, very thick at the base. The bill looked dark to me [although pictured as pale in Robbins guide]. The upperparts -- back, wings, and tail were a uniform dull greenish-gray (little the Red-eyed Vireo) -- no wingbars or back stripes. The underparts were uniform pale buffy-whitish -- a hard color to describe. It gave a loud "sweep" note 2-3 times -- similar to Yellow Warbler call note. The only similarly plumaged warbler is Swainson's which has a solid crown, as do vaguely similar Red-eyed and Warbling Vireos.