Any discrepancies in my farm?

[inilog]

Chickens have terrible night vision. They can not see in the dark. If they don't have enough light to see properly, they will not be able to find their feed and water.

Its somehow brighter. But somehow has their pile of litter. Does amounts of ammonia can affect their growth?

 

[junebuggena]

If there is not enough ventilation, ammonia build up can cause respiratory illness.

 

[junebuggena]

You may want to check out the Learning Center section of this site. There are a ton of articles covering just about every aspect of keeping chickens.
https://www.backyardchickens.com/atype/1/Learning_Center