Lgmelo, I wish I was that talented in Photoshop! If you view in large size - you can see that they are all different ducks with different markings, neck positions, size. I've added a third shot taken just a minute or so later so you can see what they did next!
When I saw the first pic...I have to confess I thought it was Photoshopped. My aplogies for haveing such a terrible thought. After seeing the others I bow to your inherent ability to make ducks line up and stand at attention! Really eye catching! and the 2nd picture is absolutely hilarious!! love it.