Very nice shots, Woza. You seem to have nailed the white birds, and that can be difficult sometimes trying to hold those highlights. Next time you are stalking those water birds, try to catch a series of shots right when they plunge into the water for their next meal. Some of my favorite shots were captured doing just that and "accidentally" catching them flip the fish into their beaks. Just let the hammer down as soon as they dip for the catch and hold it until they come up.