I'd get some penicillin and dose the injured chooks and Gobbles ASAP. Chooks outside with open wounds need to be kept free of flies. We doctored up a Fox chawed Black Spanish tom that looked a lot like Gobbles (but the Spanish was walking around with the crown of his head dragging the ground from neck injury - cleaned wounds by spraying them with betadine tea, put on some plain Neosporin on him, rubbed Adam's tick and flea spray on outer feathers (neighbor's turkey - they wouldn't take him in house) for `maggot control' and made sure he got his shots. He lived, though neck was always somewhat skewed.
Good luck!
Ed: Post #2, in this thread, might be handy as well: https://www.backyardchickens.com/forum/viewtopic.php?id=352701
Good luck!
Ed: Post #2, in this thread, might be handy as well: https://www.backyardchickens.com/forum/viewtopic.php?id=352701
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