I'm afraid I must have fed my chickens overripe scraps and given them botulism. From what I've read, botulism comes closest to matching our problem. One day there were four dead birds with limp necks and two birds who could not hold their heads up. Feathers were falling out. They were eating and walking around, but heads hanging. We thought their were suffering terribly so we killed them. It was terribly sad to see and I'm worried about the other birds. We currently have 5 left, 4 seem completely healthy. One seems healthy, but her feathers on the back side of her neck are missing completely. Does this seem like botulism? There was also a crow stuck in their area for a few hours the other day. Could it have brought something in? If it is botulism, what should I think about the surviving bird with missing feathers? What about the eggs? How long should I wait before using the eggs? Should I take her to a vet? And if so, does anyone know of a chicken vet in the Owings Mills, MD area? Thanks for any comments. This has been a really sad chicken experience.