I could get the same results by feeding him Alka-Seltzer pellets. :p
I did this accidentally with Swedish Fish candies while fishing once. I had a bunch of sea gulls flitting around and threw like 4 out there. One big honker ate like all of them, tries to take off and just plants beak first into the dock dead
Another time at the same place I watched another sea gull bobbing up and down in the low waves and seconds later a huge bluefish comes up like GULP and I hear screeching and honking before bubbling, that would work on a toucan
Though me? I think the best way would be going the ironic path. Load an 8 gauge shotgun cartridge with Fruitloops and go for point blank.
I say a flamethrower would be the best option. Light it up mid-flight and as the feathers begin to burn down to the skin and the bird goes through the intense pain and agony of being burned alive while spiraling to the ground it should live long enough to hit the ground with enough velocity to smash the skull, compressing the brain hopefully only causing brain damage affecting motor control and some other higher brain functions, allowing the bird to finish cooking but making it unable to move. And then you box it up and send it to starving kids in Ethiopia.