Hens have not laid eggs since June?

[Black Jaque]

I have a Penedesenca and an Americauna that have not laid an egg since June. The weather has not been particularly hot this summer.

They do not seem to be unhappy or unhealthy. My other chickens are laying just fine.

What am I doing wrong?

 

[SPEIGHT]

I have buff orpintons and im having the same problem

 

[Black Jaque]

I've read quite a number of earlier threads and I can't identify any of the common reasons.

I can rule out:
low light/winter
broodiness
soft eggs
free range/laying in hidden spots
eating eggs
diet
molting
The only thing left is stress which is so broad you can never really rule it out. They do not behave or appear any different than when they were laying.