A question about the colour of eggs

[DrKrettin]

The eggs which our chickens lay have shells of a colour which corresponds to their feather colouring. My wife argues that this is totally natural, but considering that she has almost zero knowledge of biology, and we do not have a statistically significant number of chickens (two, to be precise) I was wondering whether there is a known connection.

 

In isolation, I would dismiss this as coincidence. But one oddity is that our resident lizards gallotia galloti are striking in that the males have large blue spots on the sides of their bodies (which are brighter in ultraviolet) and behold - their eggs have a couple of blue spots as well. Another coincidence?

[Endy0816]

Some breeds of chickens lay blue-green eggs as well.

[Raider5678]

Some breeds of chickens lay blue-green eggs as well.

So there you have it ladies and gentlemen, the answer is......... drum roll please....... NO!

[DrKrettin]

So there you have it ladies and gentlemen, the answer is......... drum roll please....... NO!

 

Well actually, ladies and gentlemen, I have to inform you that we did have some chickens which laid bluish eggs, and they were.... drum roll... blue chickens. I jest not - they were Blue Leghorns.

 

Edit: this amazing piece of information has only just occurred to me, but 'tis true. We had them when we lived on a sheep farm, and the chicken used to love eating the maggots they found in sheep droppings. This resulted in the eggs having green yolks, but that's another issue.

Edited November 13, 2016 by DrKrettin

[Endy0816]

There's Araucana and hybrids. Just from pics seemed like pigmentation and coloration were independent of each other.

Edited November 14, 2016 by Endy0816