Have you ruled out the other reasons for thin shells besides calcium?It was. I fed it to the dogs.
One of the other reasons for the calcium infusion 2 days ago. I forgot to do it today so I'll get them in the morning.
But that's not the first egg I've had a hole poked in. Either she's got good aim for slightly defective shells or she's putting too much pressure on the eggs with those spurs.
Here's one from yesterday. Different hen laid this.
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