Buddy, it's called nature. Many birds and animals exhibit the same traits. It's called survival of the fittest. Natural Selection! Perpetuation of the species. Read about it sometime, instead of being a hateful, dead ass complainer.
Secondly, who the **** are you anyway? An authority?
Third, get a ******* clue, or stay arrogantly ignorant. Just because you have no interest in learning, or have no natural curiousity, (AKA, what makes the world go round), you're just an ignorant prick who has a shallow mind, and is nothing but a dead ass. That's why this pisses you off. You have no natural curiosity. The folks doing the study do. Now go on back into your trailer park, and keep sucking on as many beers as you can, hating people who are ******* interesting.