Look into breeds that are more likely to have the genetic trait...I've heard Rhode Island Reds are a common one and I'm pretty sure that was at least one of the culprits here as we had a lot of them.
Its something I never expected to deal with. Just be aware its a possibility especially in hot weather and if it happens once, just a hollowed out body, you'll know. Then you can watch and eliminate them only having to maybe kill a few if you catch it early. We just thought it was anything else before that. We even seriously considered aliens haha
Good info!! And yeah... never rule out aliens 😜😉👍