Ducks in Flight

I went back to where I saw yesterdays ducks and slowly walked up to them with the 450d and zoom lens hoping to catch them in flight, well the flew off all over the place.!!! This is a montage of the pictures that sort of came out. I know the expert birdie photo takers will laugh at these but hey ho I got a blip (of sorts) a faster lens? (a faster camera?) maybe one day :-(