Hello, fellow birders! Please say where you're located in your posts! I'm in Brooklyn, NY, and have spent a lot of time in this past crazy year in the park and cemetery near me looking at birds. Just starting the Cornell course and enjoying it. The heron family are my favorite. We see great blues, black-crowned night heron, green heron, and egrets in the summer (great blues year-round). The green heron have a unique call that sounds to me like sheet of thin metal vibrating. We also have hairy and downy woodpeckers and flickers, and the ID exercise between the hairys and downys in this lesson was extremely helpful. Even being in a big city, I see so much if I keep my eyes open. Looking forward to learning more.