WHY did the chicken cross the road? It is an interesting topic that we can think of and there are many possibilities too and yet we can have a great discussion on it. It all depends on what you think the chicken is!
For me, I would like to say that it might be too bored for a chicken to stay in its original shelter so it wants to start a new and exciting adventure. It is easy to start an adventure but its course of journey might not be easy as well.
As we know, a road can be a dangerous place. So we are not allowed to cross the road without zebra crossing or a traffic light. Yes, of course we do know all these rules but do you think a chicken knows them? Hence, we can describe crossing the road as part of the journey for a chicken to go over to achieve its target. if the chicken is not careful enough in making decision, its life will be ended anytime, anyway on the road.
What things attract the chicken the road? Maybe a juicier, fatter worm or a greener place on the other side of the road which full of danger? Yes, some might say the pasture of the other side is greener. Although we will never know why did the chicken cross the road, we still can guess if a chicken is brave enough to cross a dangerous road, then there must be something interesting or best for it at its destination.
Another thought that comes to my mind is that maybe the chicken is tying to escape from its entire enemy? This can be explained by when the chicken is endanger by its enemy, it chooses to cross the road for a chance to survive from his enemy.
Besides all these above suggested reasons, maybe the chicken is sad because it has just lost his mate and this leads it to commit suicide(O.O) by crossing the dangerous road? This is just another maybe that I can think of.
For conclusion, I can only say that if the chicken dares to cross the road, there could be a story or a reason behind it =] (PS: what I have written is quite boring, but these are all my opinions.)