Add lots of birds and bird variants

Add birds like cardinals and have variants of all types of birds. Along with this, add bird ambiance sounds, with an achievement to use a spyglass on every type of bird variant in the game. This would go along with the recently announced dappled forest and I believe Minecraft is lacking in this overworld department. Also, this would add so much to the game even though it may be a smaller addition that could be added in the span of a month or two.