[email protected] wrote:     Here is an abstract from PubMed re: 
teflon 
   
          1: Am J Vet Res. 1982 Jul;43(7):1238-42.  Related Articles,           
      Links 
  
   
Acute toxicosis of budgerigars (Melopsittacus undulatus) caused by pyrolysis 
products from heated polytetrafluoroethylene: clinical study.

Wells RE, Slocombe RF, Trapp AL.

Polytetrafluoroethylene (PTFE), a synthetic polymer widely used as a nonstick 
surface in cookware, releases toxic pyrolysis products when exposed to 
excessive heat. Thirty-two budgerigars (Melopsittacus undulatus) were exposed 
to pyrolysis products of either heated PTFE cookware or plain aluminum cookware 
in a specially designed exposure chamber for given periods. Clinical signs were 
recorded and necropsies were done on all birds at the termination of each 
exposure period. The PTFE products caused acute respiratory distress and rapid 
death in many of the exposed birds. At necropsy, lesions were seen only in the 
respiratory tract--extensive pulmonary hemorrhage and congestion.

PMID: 7103205 [PubMed - indexed for MEDLINE]   
      
   Jan Bolen