Can trauma/fright affect future hatch rate?
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I know most Dorking breeds are auto sexing, but I'm getting a bunch of whites soon. Are they auto sexing also?
My guess is that since they're white, that no, they aren't auto sexing.
I don't have any formal knowledge about this, but do you think your hens were being mated by one or more of your rooster(s) who was killed? Are the ones that are left less fertile? That being said, it certainly seems possible that trauma could make a difference to fertility. I am so so sorry that your flock was decimated like that, and I hope your hatch rate picks up so you can rebuild.