I agree: I think about 99.9999% of corn grown in the US (non-organic) is GMO (not just hybrid, which I am perfectly OK with!)
On the other hand, some small non-organic farmers are still growning non-GMO corn. I know of one poultry farm here in Maine that mixes their own feed using locally-grown non-GMO corn and other grains. The resulting mix is not 100% organically grown, but it is (accorning to them and the farmers they source the grain from) GMO-free. So it's possible, I guess. But certainly easier and probably cheaper on a small scale, to just buy certified organic feed, IMHO.
I hate to tell you this, but you are probably consuming GMOs a hundred times a day without knowing it. It you read "The Omnivore's Dilemma" you will be in for quite a shock at the amount of GMO corn and soybeans Americans consume unknowingly. Every soda or prepared sweet that has high-fructose corn syrup in it contains GMOs, and the corn and soybeans are further processed (using petrochemicals) into far less recognizeable ingredients (that don't even contain the words "corn" or "soybean") that make up the vast majority of ingredients in any processed food. Basically, about 90% of supermarket food contains GMOs, and therefore unless you eat pretty much ALL organic or "whole" unprocessed food, you really can't avoid GMOs. Kinda creepy!!!
We've made the switch ourselves, and although we're not rabid about it (we don't decline food at other people's houses, for example, and occasionally eat at restaurants) we only use organic or "whole" (unprocessed) food at our house. It has increased our food bill slightly, but we've been able to cut that increase by SIGNIFICANTLY increasing the amount of time spent preparing food. By avoiding anything processed, we save money but increase time spent on cooking. And we're lucky to have ready access to some organic processed stuff, like bread and pasta, so we don't have to make those from scratch.
Anyway---- sorry to get off topic on that, but I wanted to point out that unless you're prepared to try to avoid GMOs in your supermarket food, it hardly makes sense to stress out about the GMOs in your chicken's feed. But I encourage anyone to avoid them if you're prepared to make some big changes in your lifestyle! I certainly feel healthier since we've started eating this way. And -guess what?- fresh local food tastes a WHOLE LOT better than pre-made processed stuff, too!
Stacey