Ruby-crowned Kinglet

When you hear this bird sing, you are impressed by the beauty of clear, but variable notes. When you check the source, you are surprised to see a tiny bird with such a big voice. His short tail might lead you to believe he is even smaller than the 3¾ to 4½ inches which he measures. His coloring is not impressive, being an olive-gray. You might notice the distinct eye ring or the prominent wing bars. If he is excited by your close inspection, he might flash the ruby crown feathers, from which he gets his name.