dual purpose stopped laying, started pooping huge green runny mess

[TheVillageCarpenter]

Hey folks, our heavier breed (black australorp) hens 2/3 of them, stopped laying and the third is slowed significantly. Our amerucaunas are still egg laying power houses.

Their feed hasn't changed, it's sunnier now (have lots of shade when wanted) and we give them de wormer in their water before winter and in spring (few weeks ago). THey are in a run 8 birds 2 of them roosters in a 8 ft by 45-60 ft run, but they constantly are flying out so really they may as well be free range eating lots of bug and forage on top of the commercial feed. (we'll be geting a solar poultry fence soon and rotating them ever so often.

Their poops are 2-3 times the size, just green and runny, and egg less D: We have people wanting the eggs still after winter, and we've been dying for our anticipated surplus for things like deviled eggs.

Any info is appreciated and any questions to help find the solution feel free to ask!

 

[Eggcessive]

How old are the australorp hens? Have they ever molted for the first time?

 

[TheVillageCarpenter]

They have molted before, they are 1-1.5 years old.

2/4 laid yesterday, one was a double yolker. about 2 months ago, we got a few double yolkers from our hens about 3 in 2 weeks.

Also noticed the australorp rooster (they have amerucaunas in as well. they normally mate with the opposite breed ) Laid a normal poop, had white in it, perfect texture, solidity etc, if not a bit on the small side for him, but was green as well.