third lake photo= hands-down best of the three. even though the point of focus is near the center (if not even dead center, i'm not quite sure) something about the way that the lake/river curves behind that hill makes the eye travel further, thinking that that point is not as central as it really is. good job composing that!
is that second heron purple? also, not as nice as your later herons. so, improvement yay! the duck about to fly is awesome. you captured the energy building up to take-off. the hawk is very nice too, (and, yes, very pretty bird too) i know that i'm all about colors contrasting to pop out what you are looking at, and i always tell you that, but i really like how the colors of the background blend with the hawk.