My primary world, home of the original Glass Island and Skyrail system.
My modded world, featuring the delightful 
Super Hostile - 
If you haven't read about Danger Chicken yet, go back and start there.
Danger Chicken's incessant flapping and clucking finally convinced me to let it out of the fence cage. I figured it had learned its lesson and would behave, being a prime specimen of avian intelligence. Then I realized all the clucking wasn't Danger Chicken's at all. There was another chicken on my glass roof. Quickly poking a hole in the glass, I now had two captive birds.
And then there were two.
While I was here, contemplating blocky chickens, figured it was as good a time as any to expand out the grassy pen a little. There was some vacant space between the original wall and my ocean front testing room. While I was glassing up the outside, a third chicken wandered in - thankfully before this guy turned up.
That's some very nice chickens you have there....
I've always wondered... what do Creepers eat? It can't be humans, because they explode on contact. Zombies and Skeletons are undead, so they don't need to eat. Are creepers vegetarian and just trying to get rid of the nature destroying player menace? While pondering that, I decided three wasn't enough.
Oh no. I was going to have LOTS of chickens.
Eggs have the wonderful property of having a one in eight chance of hatching a chicken if you smash them, and seeing I had a nice stockpile of eggs, that's exactly what I did.
The Flock
I installed two airlocks, one to the hallway and one outside, so I can safely get into the pen without releasing chickens into my base, causing general mayhem. Unfortunately I didn't do this the first time, and five of the original chickens slipped out.
One declared itself the king of cake. Or maybe it's lobbying against the unfair ingestion of eggs.
Hard to say.
Two were obviously inferior specimens of chicken-kind, and self-immolated in the incinerator. One jumped down Mining Shaft Alpha, never to be seen again. The other two I managed to get back into the pen. Lesson learned; when raising chickens, it's best to build a secure door system BEFORE you hatch the chickens.
