Update 1.22 - aka Wild World update (Part 2.4) - Ravens & Songbirds

Ravens

Ravens will spawn in plains, grasslands, oak forests, birch forests, and dark oak forests. While passive mobs, ravens will occasionally raid farms, stealing crops and undoing the raked soil. They will also pick up any dropped meat that is in their vicinity.

Songbirds

Songbirds can be found in birch forests, oak forests, dark oak forests, cherry blossom groves, plains, grasslands. Similar in behavior as bats, songbirds will just fly around, chirping. Occasionally, they will perch and do an elaborate song. Songbirds will pick up any sticks in their vicinity. Songbirds will spawn in a similar way to tropical fish: they will have different varieties tat can be combined with different patterns, colors, and shapes.