Seven dead hens within 4 hours, not attacked. UPDATE: Teflon Poisoning!

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I just cleaned the whole thing 2 days ago and it doesn't stink. I also find it weird that they all died so rapidly and close together. Wouldn't there be symptoms first?
You would know if the ammonia was over powering . It is weird . I didn't see where you said it . Is there a vent high in the coop?

You haven't added a new heat bulb have you? I've heard of some having nonstick coatings, elements in nonstick coatings are quickly deadly to birds.
There would be burn off of the Teflon. This would compounded by the cold air . First the warm air would rise and then cool and sink .If the air is still during the burn off period it would let the toxins sink . Possibly in a column which would explain why some chickens survived the burn off period . This is very good information . I didn't know this and need to buy some heat lamps . I'll be sure to check them . Is there a specific company to be aware of ?

Listen to what OP is saying though. OP visited at 2, 5 and 7.
If it was the heat lamp, don't you think OP would have felt it was overly warm and seen the birds in distress?
OP I'm assuming the heat lamp was on during your visits.
One new variable is that bag of feather fixer. It would be very rare there was something bad enough in it to kill chickens though. Was it a new bag or is there the chance it was quite old? Was it an already open bag that something could have gotten into it?
Good points

x2. I'm theorizing now that maybe the cold (OP mentioned "drafts" in their coop) combined with humidity (frost on windows) may have froze their lungs?
I just don't see this because extremely cold air has very low humidity .The frost on the window could have bee there for a while .
 
How could hubby ever guess that something "human safe" could kill livestock. Buy stainless people!
That's what we were just talking about. We don't use it for cooking, but those bulbs are used (ironically I guess) to keep food hot at "wing bars" in grocery stores. It's messed up. It looks like they just went to sleep- like a CO poisoning. We will know better next year. We will get more. Thank you all. <3
 
You would know if the ammonia was over powering . It is weird . I didn't see where you said it . Is there a vent high in the coop?

There would be burn off of the Teflon. This would compounded by the cold air . First the warm air would rise and then cool and sink .If the air is still during the burn off period it would let the toxins sink . Possibly in a column which would explain why some chickens survived the burn off period . This is very good information . I didn't know this and need to buy some heat lamps . I'll be sure to check them . Is there a specific company to be aware of ?

Good points

I just don't see this because extremely cold air has very low humidity .The frost on the window could have bee there for a while .
Extremely cold air can easily become humid. Water in the coop, steaming foods, warm (fresh) poop, birds breathing (they produce lots of moisture- especially if you have lots). Humidity is easy to accumulate in a bird coop.
 
The rooster is the only one active (he's enormous), and 2 hens are still okay. one hen is still breathing but it's very labored and my husband has had her out in fresh air. We're not sure if she'll come through.
:fl I hope they make it for . If you've removed the light just use a fan or keep the door open. They should be ok going back in it . The toxins should vent out pretty fast if ventilation is good enough . So sorry for your house too:hugs
 

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