I agree with Discoveregg lets all get ready to go to Stavanger! lol... And the roosters both light and dark have their similarities when the are full grown. But like you the picture of the chicks and being common knowledge in Norway that light jaerhon male chicks are yellow was an eye opener for me for sure and on the hen the differences is most noticeable on the breast and lower portion of her body.! Ya'll are welcome I'm relieved to find the pieces of the puzzle finally, it was eating at me!! Calling ALL Jaerhon owners! Let's post more pictures of your birds on here and like wise as mine develop I'll do the same!