I'm a little surprised that so far we've lost 5 out of 21 of our Cornish. The remaining ones seem healthy at almost 5 weeks of age, but that's almost 25% loss. 2 died at just a few days old, one was killed by a predator (our fault...we now have the dog sleeping by them at night), and 2 more developed leg problems. Is this normal? What is your loss rate typically? Maybe we should get them from a more well known hatchery like McMurray.