I had a spectacular day of birding (5/12). I co-led a bird hike at Harrison Hills (Allegheny County) in the morning and then checked out Crook Creek Lake (Armstrong County) in the afternoon. Between the two places I tallied 27 species of warblers, highlights being: Mourning, Wilson's, Canada, Kentucky, Worm-eating and a nice number of Cape Mays and Bay-breasted. Plus other goodies like Philly Vireo and Lincoln's Sparrow. Here's my ebird checklists from both places: https://ebird.org/view/checklist/S45588133 https://ebird.org/view/checklist/S45602006
I posted some pictures to the Pa birds Facebook group and Friends of Crooked Creek Lake Facebook group.