Bird

You might be looking for Flamingo, Crebain or Swan instead.

Birds are a small flying mobs added to many biomes in the Mod. They currently serve no purpose other than aesthetics. They are very skittish, and will flee if you approach. They can fly and are very evasive, and so are difficult to kill.

Variants
Birds come in five different colors: blue, black, red, white and light brown.

There is a special kind of bird called the Crebain, which is found exclusively in Dunland.

Drops
Birds drop 0-2 feathers when killed. This is their only utility purpose. However, chickens are a better source of feathers, as birds will fly away from you, and are harder to kill.

Hunting
Hunting birds is very difficult, much harder than hunting chickens, as they will fly away quickly if you approach them. The best way to hunt these creatures is with a ranged weapon from far off. Wait until they settle on the ground, and shoot them from range. Even this tactic is not guaranteed however, as birds are very small. Not only might you miss, but it might fly away before the arrow strikes.

Spawning
Birds spawn in many regions, but mostly in forested biomes, such as the Chetwood and Fangorn.