Occasionally a hen may lay a double yolker when her ovaries release two yolks at once, rather than one at a time. This tends to happen more often when hens are young and have just begun laying. Any breed can lay a double yolked egg, but it may be more common from breeds that are good layers, like Rhode Island Reds, Sussex, and Leghorns .What breed of chicken lays jumbo size eggs?
The Leghorns are yet another breed of chickens that lay jumbo-sized white eggs. As opposed to the previous breed, they also lay a lot of eggs every year, up to 280 of them every reproductive cycle. The number of eggs they lay per year, as well as their size, depends on the age of the hen, and on how well she is fed.