I spotted two huge black birds of prey in my neighbor’s yard this morning in the Berkshires. At first I thought: those are some weird-looking turkeys. I was delighted when Orion magazine posted this link about migrating raptors on Facebook today, as that explains their presence, but I don’t know what sort they are. They flew up in a tree when I tried to snap a photo, so all I have to go on is this silhouette. Dramatic wingspan. Sharp beak. Any guesses?