Rusty Blackbird: I saw this bird along the Back Bay Fens Emerald Necklace Park in Boston, MA. It looks extremely common, but it is an uncommon bird. The population of this bird keep decline since 1960, and it is on Audubon Society's bird watchlist. Please see the following link: http://audubon2.org/webapp/watchlist/viewSpecies.jsp?id=180 So I am really glad to see one.