Well I Have Six Bugs I Found

Bugs Found In Minecraft 1.6.4:

1 > Cows Spanning In Sand
2 > Chickens On Trees
3 > Random Black Holes In Mountains And They Are Not Caves
4 > Tree Leafs Swan In Water
5 > Tree Leafs Take Over The Ground, With No Wood Around It
6 > Sand Village Spawn Incorrectly

So Can You Fix Them?