Another game here. You state why, and then ask a following person the same question.
Q. Why did the chicken cross the road?
A. Because of WhOA.
and so on. So, why did the chicken cross the road?
A:To show the opossum it could be done.
Q:Why did the chicken cross the road?
To prove to the armadillo it could be done.
Why did the armadillo cross the road?
–James
P.S. Alcona and I simulposted. Great minds think alike! 
Small ones seldom differ. 
I hope no-one double posts this with me.
Q: Why did the chicken cross the road?
A: Because it didn’t have a choice in the matter, thanks to a time honored and classic joke.
P.S. Alcona and I simulposted. Great minds think alike!
Small ones seldom differ.
So, since our posts were alike yet differ…
Average sounds ok to me 
Why did the chicken cross the road?
So Charlie Parker could have dinner (and a new nickname).
Why did the chicken cross the road?
To see his flat-mate
Why did the chicken cross the road?
to prove to the:
turtle
skunk
possum
etc.
that it COULD be done
Why did the chicken cross the road?
A: Because he was stapled to the punk rocker.
Q: Why does it hurt when I pee?
A: Because you’ve got a chicken stapled to your punk rocker.
Q: Why did the chicken cross the road?
Aaaaaah, vintage Zappa!
JES wins! Not hard to see why they made you a moderator.
djm
Why did the chicken cross the road sounds like it needs an essay answer.
Perhaps, Bloomfield should take it. Or could you make it multiple choice or true-false?
Why did the chicken cross the road? 
Why did the chicken cross the road?
The innate chickenness being a “chicken” may point to the answer. Purpose and aimlessness are in the end intertwined, both arising out of each other, and yet can we truly make concrete distinctions in this matter? Let us momentarily observe the search for food, a primary pursuit of gallinaceous birds. Well, of pretty much any bird, but work with me, here. A chicken’s chickenness, being famously short of attention span and myopic, cannot be said by evidence that it has the capacity to direct its sense of purpose beyond what is within its immediate scope of perception. And yet, its method in its purpose is one of aimlessness. Thus it shifts its scope from place to place. This is reasonable. Even a chicken can do this. Still, for a chicken to undergo such a focused -for a chicken- undertaking as crossing a road, very compelling reasons must be to hand. We may rule out its being pursued, as chicken escape tactics include random changes of direction. Again, we see apparent aimlessness fueled by purpose, a hallmark of chickenness, some would say. Actually, a fair degree of this very dynamic applies to all life, including most humans, but never mind that. We’re on the subject of chickens making beelines across roads. Would it be food, then? Only if a) all efforts on its original side of the road would have proved fruitless, or b) there were a big honking mound of tasty stuff for it to see if it accidentally happened to look, both of which are unlikely, and besides, once it got to the road proper, it would be distracted by the first morsels it came across. We may depend on this. Only utter starvation could precipitate a chicken crossing the road uninterrupted, and free-range chickens don’t starve. This brings us to another compelling possibility, and, I think, the answer:
To get laid.
Impressive essay, but your conclusion brings forth another conundrum. Isn’t it the egg that gets laid?
…and he takes the bait.
You seem to be mixing your metaphors. You keep saying the chicken is a “he” when of course, its a “she”. And that random aimlessness you like to focus on is only a human perception - from the outside, as it were. To identify the causality of poultered road crossing you would have to submerge yourself into total chicken consciousness, sometimes referred to as “buck-headedness”. As a devoted buck-head, I can assure you there is nothing aimless nor random about it. The fact is, there is no road. The “road” is also a human perception. In reality, chickens will go anywhere for a good bucking.
djm
I just asked the rooster…
He said, “Both are correct!”
