Mallard ducks in flight-Composite

This is a composite image consisting of several separate photographs of mallard ducks descending from the sky.  I've spent considerable time this early spring getting some nice photos.  But I haven't been able to get photographs of large flocks.  I decided to manufacture my own flock with selected photos of singles and small groups.  I have enough material to work with that I may decide to do more of these, unless I can get lucky enough to get a real flock.