2 year old hen never molted, lays soft shells

sakerobot

Chirping
Nov 28, 2023
67
169
93
New Hampshire, zone 5B
One of our hens has been occasionally laying incomplete or soft shelled eggs for a couple months. Today we finally confirmed that it's the hen we've been suspecting.

She's one of our Barred Rocks that were hatched in May 2023. The other hens of her age have all gone through molting.

We know she hasn't molted for two reasons: her head is still bald from last year, while the other two with such haircuts have grown theirs back. She also has short feathers on one wing - from being clipped due to getting to roost in a hemlock tree in the fall of 23.

The soft shelled eggs are not consistent, sometimes the eggs have hard shells, sometimes only the tip of the egg is soft:

20250402_164857.jpg

We found an extra large egg that had a double yolk the other week which might be hers too: 20250416_161926.jpg
She was one of the few hens who kept laying eggs daily in the winter.

Could stress be a factor? She lost her rooster and a fellow BR hen to a hawk in January, by which point everyone else had molted or was going through a molt. They're fully netted now, so hawks aren't a problem. We also have a few young roosters, the offspring of the brave father.

She has also always been a very weird chicken, who is known for making a very unusual loud cackling noise that sounds like a forest witch. I don't know if her personality could play any role in her not molting correctly.

Is there a way to encourage her to molt? It's in the 70s here during the day, and the days are long and sunny.
 
If the head feathers never grew back in than I would suspect some other bird is plucking her. I see the lose of head feathers when hens want in a nest and another hen doesn't want to leave so they peck and pluck the head.

Some can molt within you even knowing. Generally better layers molt harder, and poor layers molt slowly. The molt is driven by decreasing daylight. You can force a molt, but I wouldn't recommend it as it can be stressful.
 
What is their diet, including treats, supplements, and how often they are given?

Any signs of respiratory illness (sneezing, wheezing, gaping) or swelling of the joints?

I would get some Calcium Citrate+D3 tablets from Walmart and give her one tablet daily for a week or so and see if that helps at all.
 
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