I have 4 day old Jumbo X cornish cross chicks, and everything I've read says they are lethargic and abnormal. I just wanted to share that mine seem just as active as other chicks I've raised, and they even played a game of keep-away with a worm this morning in the brooder (I found a tiny worm in the compost pile). They scratch and preen, and seem pretty active. This might be because they are still young, I don't know. I made a pen for them in the garden in some recently-sprouted mustard and buckwheat, where some millet had grown and dropped seeds this summer, and put them outside this afternoon for 20-30 minutes. (It was about 70 here and they were in direct sunlight, no wind). They ran around and pecked at things, ate some seeds I think, and seemed normal. They seemed to begin to get chilly (clumped together), so I brought them back under the brooder and they ate and all got ready to have a nap, nearly all 20 were asleep, until my dachshund came up and barked at my mother, who was visiting, to pick him up, and they all scattered like a wave of water away from the noise. I hope that with this early training they will forage more for themselves when I'm able to put them on pasture (for the 2 or 3 weeks after they are fully feathered before slaughter).