"The most horrific part of the warrant was having to euthanize every single one of the roosters on the property," said Eccles.
http://www.spca.bc.ca/media/Cock_fighting_surrey_Feb282008_Press.asp
Let's get our terms perfectly clear here. This is not euthanasia. Euthanasia is "the painless killing of a patient suffering from an incurable and painful disease" according to the Oxford Dictionary.
This was killing or slaughtering. Wringing necks of so many healthy birds is not a job that a Society for the PREVENTION of Cruelty to Animals should be engaged in.