Adds 10 types of birds. If Mobs Animals, Animalia, Mineclone2 or Mineclonia is installed, they drop raw chicken upon death.
The birds aren't saved in the world file which means if you leave and enter your world, they all disappear and new ones spawn. So you can't put them inside a cage. However it also means you can uninstall this mod at any time. I did this because they primarily serve a decorative purpose.
Definitely adds some life to the world
I like it. I always have some ambient sound mod installed and its weird to hear birds but not see any at all. This fixes that well enough.
I made a couple tweaks to reduce the spawn rate of swarms. Too often, my skies would get unrealistically crowded, and so many moving shadows on the ground was distracting. Also, doubled the despawn distance, so they just fade nicely into the fog, instead of harshly popping off screen. This also improved performance.
What I'd like to see, is more variation in spawn altitude, and the ability for them to change altitude & direction, so they can actually fly around. I just don't know LUA well enough to contribute that much yet.
Also, just noticed a bug where birds can spawn with 0 (or near 0) velocity. They seem to eventually despawn anyway, but it is odd.