I was shooting ducks at my fave pond trying to get a good back-lit shot. I kept getting closer and closer to this pair of teal. I guess I got too close, lol. The male jumped off the pond so quickly, all I got were his feet. I had to laugh. I will try again. I know where he lives. Oh, the challenge of shooting manual focus lenses. D300, 400 mm Ai-S,ISO 1600, f4, 1/400s
I agree, Teal are fast, like greased lightning! And all the dabblers share that one-slap of wings on water and up up and away, so difficult to catch! The other fast waterfowl are Northern Pintails, that seem to love a windy day in Spring, and tear up and down marshes and farm fields.
I would increase the exposure on these images to increase overall brightness levels.
BTW, is f/4 the max aperture on your lens? (I am not familiar with it)