Frozen Chicken Wings

Put the summary of the bug you're having here

This isn't a horrid bug that destroys the game, I just didn't think it was supposed to happen. I trust you guys didn't add a feature that froze the chickens wings in place when their in water, did you? (If you threw together a way to make their wings freeze when their in water though, that'd be cool )

Steps to Reproduce:
I just had chickens flowing in water shown in the picture below, the wings froze in place, but besides that, their normal. EDIT; (They were there for a long amount of time and I was having lag spikes, don't know if that had anything to do with it though...) END EDIT

Video of it happening is here;
http://www.youtube.com/watch?v=ZIRPWlua5Zs