Ok,this sounds like a wind-up to me,but as April 1st has passed,here goes....
Apparently,one can tell which chicken laid which egg by matching egg colour to ear colour of the hen.
Apparently,you have to fold forward the feathers behind the eyes to see the ears and there's the tinge. Any credence to this? I would check myself,but as the hens I bought 3 weeks ago still aren't laying (grrrrrrrr) then I can't.
This is a new one on me!!!