thing is sure, it takes too long and is carried out under circumstances and
for reasons that are inexcusable. There is still quite a variability in how much time it will take to die in a gas chamber. Factors determining such outcome are:
1. number of birds in the chamber 2 volume of the chamber 3. gas type and concentration used 4. flow rate of gas applied 5. accidental gas leakage
from chamber, e.g. faulty gaskets, incomplete closure of chamber 6. untrained and unobserving personal 7. biological variants relating to species, physiology etc.
From the materials I have tried to evaluate it appears that wild-caught Canada Geese will die within 5- 15 minutes and some may still not be dead. Gassing wild-caught Canada Geese to death is simply unacceptable, cruel and inappropriate." -- Jay Fingerlakes