Infertile hen lays an egg; what do I do with it?

[catwalk]

So, has it been proven that a hen's disposition affect her productivity? If it works like that, and Phyllis waited two years to lay this egg because she wasn't happy, how d factory farms stay in business? I grew up on one, with 133,000 hens crammed into less than an acre, and I've never seen living things so angry and miserable. I agree that her change in environment has 100% to do with it, and I'm honored to be the recipient of her first egg, but how much of a factor was her mood?