I have twenty four birds 6 sexlinks 6 RIR and 12 White Leghorns that I bought at Tractor Suppy Co. I'm getting about 21 brown eggs a day now a 23 weeks old but no white eggs from the WL. How many weeks before your White Leghorns stated laying eggs? The photo is a picture of "MARBLE", a sexlink that changed colors on me about 12 weeks. Marble is the only bird that seems to be on the bottom of that pecking order but also seems to be a different species bird with a shorter neck. My point is could my White Leghorns not be White Leghorns? And can you really tell what color egg a bird will lay by the color of thier ear lob?