Had a really nice morning at Pennyfield Lock - 8 warblers including our first Black-throated Blue Warbler, Chestnut-sided Warbler, and a few Great-crested Flycatchers.

Also of note - 3 vireos (Yellow-throated, Blue-headed and Red-eyed), 3 raptors, Scarlet Tanager, lots of woodpeckers and resident stuff, and a Yellow-throated Warlber appearing out of nowhere!

Cheers
Tim and Ellen
Chevy Chase, MD