I'm sorry for your loss. I think it is always difficult.Final update: I had to put down my other ISA Brown tonight. She was 3 years, 8 months. Her last egg was 5 days ago, today I found her hiding in a nesting box with foamy egg goo dripping out of her vent. She’d been laying consistently up to that point. It’s always hard to put a hen down, but I decided to end things now before she got really miserable. Cried a little bit and buried her in a nice spot by my apricot tree. The eggs were nice, but at what cost? That was the question I had going through my mind throughout it all.
We have 3 ISAs and the one who is just over 2 (she could be 2.5) is now laying about 4 maybe 5 a week. Hopefully this will make it easier on her body and she gives us a good amount of eggs. I wondered the same with the breeds that produce 6-7 a week.