Cockfighting is a blood sport in which two aggressively bred roosters are pitted against one other in a confined ring and pushed to battle to the death. Fights can range anywhere from a few seconds to 15 minutes and can take place in abandoned factories, backyards, or even basements. The loser is usually killed immediately by being stabbed in the heart with a sharp object or by having a nail driven through his brainpan. The winner is usually taken away for use in another fight and may also be killed. Each bird has a comb and wattles, which it uses as a weapon. They will peck, kick, and bite each other until one gives up or loses too much blood. A cockfight will often have a judge with a watchful eye to ensure that the birds don't kill one another before their time is up. Sometimes a fourth bird is used if both combatants show great skill but not enough strength to finish the match. Even though cockfighting is banned in most countries, it is still popular in others. Cockfighters believe that there is no better test of courage and fighting spirit than that found in a cockfight. They also enjoy watching a good fight to see who is stronger and more aggressive. Because of this, cockfighting remains popular in many parts of the world.