I should have taken a picture of it. Today I cracked a large egg from my flock and was not surprised to find a double yolker. They are new layers and double yolks are common. What was not common was one yolk was nice and yellow and looked totally normal and healthy, the second yolk was really pale, completely round and hard but had a normal white around it. When I say hard I mean it would not break, it was like the centre of a golf ball.
Anyone else experienced this or know what this is?