Hi everyone 
This is my first post and I appreciate any help I can get!!
A wee back story: I have a hobby farm with ducks, Guinea fowl, blue azure hens, silkies, lavender Orpington and Marans.
I have multiple poultry houses and chickens in different areas of my farm- they aren't overcrowded.
My Marans hens have stopped laying, really for months now. I'm in Ontario, Canada. They stopped in July when we have the longest amount of daylight.
My other hens/ducks/guineas haven't stopped laying.
They will, on occasion, lay an egg that is soft.
1)All of my poultry has free roam outside during the day.
2) They have access to layer, oyster shell, grit and water 24/7
3) They get fresh fruit and veg
4) No rooster
5) No poultry lice
6) I have tried changing the brand of layer crum and got different oyster sell
7)No chemicals or pesticides
8)I don't believe they are moulting- certainly not all 3 at the same time.
9)Nothing I can think of that would have caused them stress
I think that's all!
I have had chickens for years and my husband his whole life. We are totally stumped. I will be so appreciative to anyone who can solve this mystery.
Thanks!
Kelsey

This is my first post and I appreciate any help I can get!!
A wee back story: I have a hobby farm with ducks, Guinea fowl, blue azure hens, silkies, lavender Orpington and Marans.
I have multiple poultry houses and chickens in different areas of my farm- they aren't overcrowded.
My Marans hens have stopped laying, really for months now. I'm in Ontario, Canada. They stopped in July when we have the longest amount of daylight.
My other hens/ducks/guineas haven't stopped laying.
They will, on occasion, lay an egg that is soft.
1)All of my poultry has free roam outside during the day.
2) They have access to layer, oyster shell, grit and water 24/7
3) They get fresh fruit and veg
4) No rooster
5) No poultry lice
6) I have tried changing the brand of layer crum and got different oyster sell
7)No chemicals or pesticides
8)I don't believe they are moulting- certainly not all 3 at the same time.
9)Nothing I can think of that would have caused them stress
I think that's all!
I have had chickens for years and my husband his whole life. We are totally stumped. I will be so appreciative to anyone who can solve this mystery.
Thanks!
Kelsey