John Savage wrote:
I can't just recall ever seeing a hen with white ear lobes. You can
extend your rule of thumb to Chinese bantams--they are white birds but
with bright blue wattles IIRC and I think their egg shells are blue.

If you are talking about silkies, our silkies always laid
white eggs. They had white feathers and black skin.
I have heard that silkies have black bones, but I can't
confirm that. Sounds unlikely.