Do all Robins lay blue eggs?

Question

I was just wondering if all robins lay blue eggs or if some lay different colored ones.

Answer 1

usually just blue, the eggs usually have browinish spot on them though

Answer 2

Robins do usually lay blue eggs. The color is from the pigment in the mother's blood. However, not ONLY robins lay blue eggs. I linked to a website that explains it in details.