This a.m., from about 9:15 a.m. to 11:15 a.m., I birded a stretch of northern Rock Creek Park in Rockville--from Old Baltimore Rd. to Avery Rd. Highlights were: Swainson's thrush 2 veery 1 yellow-throated vireo 1 magnolia warbler 4 chestnut-sided warbler 3 American redstart 2 Canada warbler 2 black-and-white warbler 2 ovenbird 2 common yellowthroat 2 black-thr. green warbler 1 northern parula warbler 1 rose-breasted grosbeak 1 Also had a pair of Baltimore orioles passing through the backyard this a.m., and 28 nighthawks over at dusk (and one at 7:50 a.m.). Howard Youth Rockville, MD hmyouth@erols.com