I got 2 Sultin chicks at a sale this past spring and both were pullets. One or maybe both have started laying eggs, so far about a dozen and all are fart eggs, not even a speck of yolk. They get eather Southern States or Blue Seal Layer and a little cracked corn. They also have a roo with them and are in an about covered pen 12x12. I get fart eggs from new layers once in a while, but never this many. Any ideas why there are no yolks?