Mississippi Kites-video clip of pair working on nest together

This brief video clip shows both of the Mississippi Kites working on the nest together. I was surprised to see this and thought maybe they had actually been eating something that was in the bottom of the nest. However, I have watched this several times, stopping it to look for signs of food which I haven't found, and believe what is shown is the two moving some nesting material around in the bottom of the nest which may be new nesting material just brought to the nest by one of the kites. SeEtta