Slightly off topic (maybe). We all have hear about the "canary in the coal mine" Miners used canaries to warn them of dangerous toxins/low oxygen in mine - bird up and dies, you get out of there.
So.....If it's known (Google Teflon poisoning or toxicity in birds) that Teflon emits toxic fumes that will quickly kill birds (not just heat lamps, but cooking with Teflon coated pots/pans in the kitchen - think brooding chicks in the house) then why in the world are we even using these products. If the fumes will kill a chicken (or birds) that's enough for me to never use something like this, just for my own health. (I don't think I've ever owned any Teflon - I use cast iron and stainless steel)
Done with my rant now
In case those that joined this thread afterward - see the reference that @casportpony made - interesting read https://books.google.com/books?id=LKY_CwAAQBAJ&pg=PA594&lpg=PA594&dq=avian+medicine+ptfe&source=bl&ots=CaFSUoxkiY&sig=BsEyywoDsnIt-So7kHD696FHnj0&hl=en&sa=X&ved=0ahUKEwjoys30zMPYAhVnllQKHVEUCRwQ6AEIMDAE#v=onepage&q=avian medicine ptfe&f=false
More google stuff - there is a lot of information out there if we start looking.
https://www.chemours.com/Teflon/en_US/products/safety/cookware_safety.html
(((To date, cooks in more than forty countries around the world have purchased over two billion pots and pans with Teflon™ brand nonstick coatings for home and commercial use. In all of this experience, there has been no record of any significant human health problems.
Bird owners should be aware that there are potential dangers in the kitchen. Cooking fumes, smoke and odors that have little or no effect on people can seriously sicken and even kill some pet birds, often quite quickly. Also cooking fumes from any type of unattended or overheated cookware, not just nonstick, can damage a bird's lungs with alarming speed. Dr. Karen Rosenthal, DVM)))
****Note the words "significant" and "little or no effect" wording means everything.
http://www.ecomall.com/greenshopping/teflon4.htm
https://www.consumeraffairs.com/teflon-warnings
So.....If it's known (Google Teflon poisoning or toxicity in birds) that Teflon emits toxic fumes that will quickly kill birds (not just heat lamps, but cooking with Teflon coated pots/pans in the kitchen - think brooding chicks in the house) then why in the world are we even using these products. If the fumes will kill a chicken (or birds) that's enough for me to never use something like this, just for my own health. (I don't think I've ever owned any Teflon - I use cast iron and stainless steel)
Done with my rant now

In case those that joined this thread afterward - see the reference that @casportpony made - interesting read https://books.google.com/books?id=LKY_CwAAQBAJ&pg=PA594&lpg=PA594&dq=avian+medicine+ptfe&source=bl&ots=CaFSUoxkiY&sig=BsEyywoDsnIt-So7kHD696FHnj0&hl=en&sa=X&ved=0ahUKEwjoys30zMPYAhVnllQKHVEUCRwQ6AEIMDAE#v=onepage&q=avian medicine ptfe&f=false
More google stuff - there is a lot of information out there if we start looking.
https://www.chemours.com/Teflon/en_US/products/safety/cookware_safety.html
(((To date, cooks in more than forty countries around the world have purchased over two billion pots and pans with Teflon™ brand nonstick coatings for home and commercial use. In all of this experience, there has been no record of any significant human health problems.
Bird owners should be aware that there are potential dangers in the kitchen. Cooking fumes, smoke and odors that have little or no effect on people can seriously sicken and even kill some pet birds, often quite quickly. Also cooking fumes from any type of unattended or overheated cookware, not just nonstick, can damage a bird's lungs with alarming speed. Dr. Karen Rosenthal, DVM)))
****Note the words "significant" and "little or no effect" wording means everything.
http://www.ecomall.com/greenshopping/teflon4.htm
https://www.consumeraffairs.com/teflon-warnings