Selective breeding has done a real number on layers and broilers—chickens, that is. The layers I’ve had, poor things, don’t live long after a life laying a two-ounce egg every day or so, even in winter, after they reach six months. Modern chickens are living examples of how rapid evolution can be. At two years of age they sit around one day and fall over dead the next. Or they walk around like they’re carrying a load, and are put to sleep by sympathetic vets who can tell a rampaging cancer from a stuck egg, At least death comes quickly to the kindly birds.
Some vets don’t know much about chickens. I discovered this shocking fact some time back in the 1970’s, when Martha started walking around splay-legged, like a bird with a loaded diaper. I drove her, with her suspiciously balloon-shaped abdomen, to the vet ten miles down the road. The young vet extracted some clear fluid from Martha’s belly and admitted to being somewhat puzzled. I suggested I would be willing to pay for an x-ray, and the deed was done. In the x-ray, to our horror, we spotted a very clear dark object framed by the l-shaped bones of the overloaded chicken.
“How much would it cost to have that removed?” I asked
The answer was also shocking. $100 was real money in the 70’s. Sadly, I took Martha home, but something about that x-ray bothered me. When I deposited the sick chicken in the back yard, she ran off to greet her nest mates, apparently relieved at having escaped major surgery.
I ran for the bookshelf still loaded with text books from my college days and found the basic zoology text. There it was, on page 108, a simple anatomic diagram of a domestic chicken, a familiar dark spot framed nicely by the l-shaped bones of leg and pelvis. It was labeled “gizzard.”
I laughed out loud, then smirked knowingly to myself and gave myself ten brownie points for not calling the young vet with the good news. Martha lived another happy six months before she succumbed to her mysteriously bloated belly.