Biomes o plenty wiki http://biomesoplenty.wikia.com/wiki/Biomes_O%27_Plenty_Wiki
Installing a modpack using the Technic Launcher is easy. If you don't already have the launcher downloaded, visit our download page to get the latest version.
Type in the modpack name ([Official] EnderChicken) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select [Official] EnderChicken from the list on the left. The launcher will handle everything else!
Biomes o plenty wiki http://biomesoplenty.wikia.com/wiki/Biomes_O%27_Plenty_Wiki