so basically, my hard drive got corrupted and I had to delete everything that was in it, including my HUGE old world, where I built farms and huge structures.
so I decided today to comeback into a new world with a random seed.
on my second day, I reach a second village that's close to spawn and what do I see? A PINK SHEEP. now, if you've read the sheep page in the minecraft wiki forum, you probably know there's a 0.164% chance of a pink sheep to occur. however, I didn't find just ONE sheep, I found TWO PINK SHEEPS!
More specifically, that means that within an entire 32x32 chunk region (32x32 is the "grid size" that villages and temples use and they leave the RNG in the same state within each region) every flock of sheep will have the same colors (at least for the first four spawn attempts in a pack; each of 4 mobs has 4 attempts each) so the chance of a pink sheep within a given region is about 0.656% regardless of how many sheep (unless none) spawn within it.
That said, I'm really surprised that Mojang has not fixed that bug yet; it is as simple as adding a new RNG object to the structure class and using that instead of the world RNG, and optionally, if you want sheep color to still be tied to the seed (otherwise it will be completely random, as with variants of other mobs, villager trades, etc), call the setRandomSeed method immediately before spawning passive mobs (this would also work by itself but structures really should use their own RNG; mineshafts already do use the main RNG to determine whether they can spawn):
In MapGenVillage(etc); the first two lines also shows why the seed is set to the same value within regions; maxDistance defaults to 32:
Of note, this fix actually makes it easier to find pink sheep because now they vary from chunk to chunk, not region to region; I found two in widely separated areas in a world I played using these changes and have seen quite a few more in test worlds, while a far larger vanilla world that I have only has several pink sheep in a small area (while the fix(es) means you'll likely only ever find one at a time you can breed them with any other color to get more).
Why is this so amazing? I don't want to be mean but pink dye is fairy easy to obtain, so you just dye the sheep and get the wool, if that is what you want. The died sheep is not any different from the original one neither the wool you get from it.
In this series paulsoaresjr starts a new world with Minecraft 1.9 and finds pink sheep. He marvels because they are so rare and founds the Pink Sheep Clan. You can find later episodes by searching for "Pink Sheep Clan" on YouTube.
I knew Pink Sheep were rare but about a one in a half percent chance in a thousand rare? Are they really that rare? I want to say the first one I ever saw in my world, about 3,000 blocks from spawn where I made the first village in my world, way back in 1.2.5 had two of them there, but I could be mistaken. If stuff like this is constant I could check the seed. It did have at least one for sure though. I never knew they were quite that rare.
I've never seen a charged creeper though. I've never seen the whole "horse spawns skeletal horses" thing happen either.