i got 5 white leghorn roos from purely poultry they look like white leghorns but one has few black feathers in him and yellow tinge and another rooster has yellow in his feathers kinda like a nicotine stain on his feathers these birds are not dirty are they pure bred or should i get rid of these roosters? I got a pure hy-line leghorn rooster that looks tottaly diffrent from these guys and his crow is more screechy and high pitched the other leghorns are deeper crow like a rir or barred rock are they pure or what?