The birch forest hills biomes are found in the Overworld, they are made up of hills and mountains that are covered in grass blocks and birch trees. Not a lot of wildlife mobs spawn here.
Birch forest hills are biomes that occur when a hilly and mountainous area is covered with birch trees. When the birch forest is generated in a hilly biome, the trees are taller than usual. Other than that, the birch forest hills are pretty similar to regular birch forests.
Since the birch forest biomes are on high and mountainous terrain, a lot of passive mobs like wildlife don't spawn that much. Hostile mobs such as creepers, spiders, zombies, etc. can still spawn in birch forest hills biomes.
Birch forest hills are a variant of regular birch forests that occur on hills and mountains. They don't have a lot of wildlife spawns but the monster spawn rates are unaffected. This biome is somewhat rare since birch forests usually generate mostly on plains.
A. Yes, birch forest hills are rare biomes since birch forests are usually found in plains.
A. Passive wildlife mobs such as sheep, cows, etc. are not found in birch forest hills, but hostile mobs such as zombies, creepers, etc. spawn at their normal rates.
Web Search
plagiarized
Sources
Searches Found
Comparison