By Sam Wainright and Michael LaCombe (For complete bird lists, please see Bird Lists 2019.) Spring bird migration is in high gear! New species arrive, and old friends depart, every day. We give two examples. First the arrivals… Today at Ice Pond, we saw 6 species of warblers: Black-throated Green, Black-throated Blue, Black and White, Northern Parula, American Redstart, and Magnolia. A weather front moved through the area the day before, and there was a “fallout”. What is a