So I bought 2 Cornish Crosses and they look yellow and like a Cornish Cross chick- they are about 4-5 weeks old but they are started to get reddish feathering on chest and a little on the head and one of them has grn/olive legs like me ee's. The other has grnish/yellow legs also like an ee. They also aren't any bigger than my other ee's..Could they be mixed with ee?or red? Just wondering..if it could be a light colored ee?