Adds Birch forest update along with fireflies from Minecraft Live.
Fireflies and cattails can now be found in the mangrove and regular swamps
The silverbirch forest, full of flowers and pollen
![Silver Birch [Deprecated]](https://cdn.modrinth.com/data/PAWvEB5f/7d51be4f4d20d3fe8180a365b4b1de5b28ef2513_96.webp)
