In this seed (Rare Tall Birch Forest for Minecraft PE) you will be able to find a rare forest which contains plenty of tall birch trees. According to the Minecraft Wiki that type of birch tree is very rare to find. This is actually the first time that I see someone submit it as a seed to the website so it must be true!
Found by: Kosie24
How to find the forest in Rare Tall Birch Forest seed?
The spawn is not very interesting. Make sure you’ve toggled cheats in the game settings. If not, then go ahead and turn it on.
Type the following text command in the chat to teleport to the forest: /tp @p 833 87 -14
Here you will find loads of tall birch trees which are considered very rare in Minecraft. They can only be found spawning naturally in the world. A birch sapling will never grow to this amazing size.