Hi all - Need advice 
I've lost a hen a week for 4 weeks now!
I've quail: half are 9mths old, half are 5 mths old. Mix of ages are dying.
>I've 22 birds, 5 Roos.
> I'm in Canada where's it's not even cold yet. Ranging -5C/12C so far and expect to hit and avg of -5C/-20C in the new year.
>This is my setup, and the bedding is 5" of pine needles, dirt, leaves, stall dry, pine shavings and Timothy hay. Bedding is totally dry. Turn it everyday.
>Covered sandbox, with Timothy hay too.
>Nest boxes have 15W greenhouse heating mats. Straw/hay with pine shavings on top for ease of cleaning.
>Feed in image. Supplement with Mealworms, scratch grain & birdseed. 1/2 c per day.
> Long feeder of always full of oyster shells.
>100% Predator proof, not even the mice are getting in.
>Left side & rear is covered with Poly. Right side is thick black fabric & tarp.
And roof is thick black fabric as shown. Front is open/South facing.
>Supplemental lighting on timer, 14hrs day.
I'm at a loss! Do you think NutriDrench would be beneficial? We do use for our chickens on occasion.
Any advice, feedback is appreciated

I've lost a hen a week for 4 weeks now!
I've quail: half are 9mths old, half are 5 mths old. Mix of ages are dying.
>I've 22 birds, 5 Roos.
> I'm in Canada where's it's not even cold yet. Ranging -5C/12C so far and expect to hit and avg of -5C/-20C in the new year.
>This is my setup, and the bedding is 5" of pine needles, dirt, leaves, stall dry, pine shavings and Timothy hay. Bedding is totally dry. Turn it everyday.
>Covered sandbox, with Timothy hay too.
>Nest boxes have 15W greenhouse heating mats. Straw/hay with pine shavings on top for ease of cleaning.
>Feed in image. Supplement with Mealworms, scratch grain & birdseed. 1/2 c per day.
> Long feeder of always full of oyster shells.
>100% Predator proof, not even the mice are getting in.
>Left side & rear is covered with Poly. Right side is thick black fabric & tarp.
And roof is thick black fabric as shown. Front is open/South facing.
>Supplemental lighting on timer, 14hrs day.
I'm at a loss! Do you think NutriDrench would be beneficial? We do use for our chickens on occasion.
Any advice, feedback is appreciated
