Chickens exposed to CO2 try desperately to escape. They take deep breaths trying to expel the gas and the sensation of slow suffocation but the deep breaths cause them to inhale even more gas. Death by CO2 is a horrible, brutal way for chickens to asphyxiate to death.
Humane Alternative According to Animal Haven's Frank DeGiacomo, a birth control bait called Ovo Control would reduce the chicken population effectively. An alert posted on ar-news notes that the city of Honolulu has been trapping chickens for over a decade "using a variety of hunters, trappers and exterminators," knowing full well that the trapping is futile, whereas birth control works.
What Can I Do?
Urge Honolulu Mayor Kirk Caldwell to use birth control instead of trapping and gassing the chickens. Tell him you are outraged that his administration would trap and torture these birds to death when contraception is available for the purpose.
Phone: (808) 768-4141