It's not exactly a 'behavior,' but since it doesn't seem to be an illness, I don't know where else to put this. I have a 4 year old RIR hen called Fred. In May of this year, Fred looked like this: Pretty normal, right? Well now, she looks like this: (A video showing her whole body is here:Half-White Fred ) To be honest, I have never heard of anything like this. None of my other chickens, even the older ones, have turned colors like this. She has the same diet as everyone else and seems to be in very good health. Nonetheless, she started slowly changing colors when summer started and has been transforming white ever since. I've been saying I'll have a white chicken by Christmas. Does anyone know what could cause something like this? Is it just genetic? Do you think she'll stay that way? Insight or similar experiences would be super helpful.