If no hormones, then what's inside their chicken?

McD's ad in the ST today made me happy. It said that their chicken meat is hormone-free. Seriously huh? That new chicken burger with cheese looks tempting. Now I've got less guilt to stop me from feasting on their fast food. Their fries--still the best!

But I wonder how they grow their chickens without hormones. I mean, don't tell me McD can afford free-range chickens and all that? No hormones, steroids, antibiotics? Healthy grains and worms for their meals? I'm just wondering. 

Weekend is coming. Perfect timing to try out their new burgers with Hubby and the kids (oh what a bad mama I am! Blpth!). I wonder if it's too early to let D have his first Happy Meal? Heheh. Nah I think I'll still cook porridge for him.