I haven't trusted the weather enough to take my new 500mm lens anywhere so the local birds continue to be my test subjects. The first one is a tufted titmouse feeding on pears in my front yard. I don't remember what variety of pear tree it is, but the fruit is tiny, about the size of a cranberry.
I've been shooting mostly with an aperture of f/5.6, which at ISO 400 resulted in a shutter speed of 1/250 for this one. A chickadee ducks out of the way as a tufted titmouse blurs past.