Rabbits Oddly Mingle and Strangely Regroup

There are, of course, many card tricks available for our enjoyment. Most involve the traditional playing cards of the four-suit variety. In the video presented here, I've chosen to use picture cards - particularly appealing to the younger followers of magic.
Four green rabbits and four red rabbits are displayed in their two groups. The mysteriously mingle together in a magical way, now being found in the order of Red, Green, Red, Green, etc.
Just as oddly, they re-form into their original groups of all-Red and all-Green.
All of this happens with a minimum of movement from the magician's hands.