Hen just strained to lay HUGE egg, input please (photo included)

[sumi]

Corrugated shells like this one happens when the egg membrane is thinner than it should be, in this case because it got stretched to cover a bigger egg (and quite possibly a double yolk). This resulted in insufficient plumping of the egg, leaving a corrugated membrane onto which the shell got deposited, so the shell took on a corrugated appearance as well. This is often seen with birds recovering from infectious bronchitis, but it can also be caused by Newcastle Disease, excessive use of antibiotics, copper deficiency, excess calcium consumption, a defective shell gland and can be hereditary. Egg problems like these are also more common in very young or old layers.

 

[nab58]

3.5 oz's!!! That's one huge egg!

 

[Lady of McCamley]

Ate the egg for breakfast this morning. Had 2 normal yolks in it, one a little larger than the other, both good size yolks. Only had to crack one egg for breakfast
Lady of McCamley