Posted By:
P SpaethI was about to post as a joke are the cocks on steroids, but apparently (at least according to this undoubtedly PC site) some of them ARE!!
http://www.hsus.org/hsus_field/animal_fighting_the_final_round/cockfighting_fact_sheet/>
EDITED TO ADD EXCERPT
Aren't these birds natural fighters?
While it is true that birds will fight over food, territory, or mates, such fights are generally only to establish dominance within a group (the pecking order) and seldom result in serious injury. This natural behavior is quite different from what happens in staged cockfights, where pairs of birds, bred for maximum aggressiveness (and sometimes given steroids or other drugs to make them more successful fighters) are forced to fight until a winner is declared.