I have a 18mth old 'white' araucana hen. I use the term 'white' loosely! She is filthy. I have several white hens that are reasonably clean. The weather has been wet and cold here. The run is on woodchips and not everso wet. Could there be a reason why she is so dirty or do some hens just attract an insane amount of filth? I have washed her twice before but she always seems to end up covered in muck.