I am trying to figure out what kind it is. I think it is a variety called a Charming Hummingbird. I spotted her (I'm pretty sure it's a her) sitting by herself way up in a barren tree mostly in silhouette. She was very patient while I aimed my long lens with its great image stabilization up and photographed her. This is a crop of approximately 1/9th or 1/12th of the image