We had some mixed pure breed fertilised eggs that we put under our broody hens. I have figured out what the others are but this one has me stumped. It is 4 weeks old. Can anyone shed some light on what breed it is? It has just started to develop a bit of a black feathered crest on its head but I'm pretty sure it isn't a polish. At least, it doesn't look like the other Polish we have had.