One of my hens (7 mos old, silver laced Wyandotte) was lethargic yesterday; I thought it was the heat. Today she is dead and now one of her mates (same sex & age speckled Sussex) is acting the same way. No change in environment. Plenty of fresh water and no change in commercial feed (Purina layena with added oyster shells which they began getting at around 4 1/2-5 months old: zero problems, though hubby bought pellets instead of crumbles this last time). For treats they get, apples (no seeds), watermelon, alfalfa (1/4 flake, no mold!), fresh grass clippings (no fertilizer or weed control). They are in a naive 12x16’ stall with a 12’ ceiling (16 hens 1 rooster). There are two human-dwelling sized doors (tube metal with stretch steel welded from top to bottom) at opposite ends of the stall for cross ventilation; fan constantly moving air around in stall, but not “blowing”. Their footing is organic stratified (dirt then 2” straw then 2” dust free pine shavings; repeat 3 or 4 times) and like walking on a mattress. I chuck about a cup total of scratch over the bedding almost every day as both a treat and to encourage them to scratch about and keep the bedding aerated and fluffed, which is what they do; I add to it intermittently. There is no dust, excess moisture or any odor at all. But CLEARLY something’s amiss!! Any ideas?!?! -Sad and confused in North Central Texas.