We have a beautiful buff silki rooster that was healthy as far as we could tell, but two days ago i noticed he didn't come out of the coop in the morning. When i checked on him, it's almost like his legs are useless! He tries to get up, but they don't have the strength to support his weight. We've isolated him and given him plenty of good food, but he's not eating much at all. The only thing that i can think of that has changed recently is that we wormed our flock about 10 days ago with Wazine. Any thoughts?