Talk:Moose/Goose Egg/@comment-26148679-20150706212300/@comment-90.185.106.78-20150811175020

" If left alone for roughly 1 day after it arrives, a  Moose/Goose Egg  will spawn, which will hatch into 5  Moslings." - Mosse/Goose page

Depending on your settings there might spawn a new one though. The egg spawns from lightning as well as a Moose/Goose, hence the raditing electricity. So just leave the Moose/Goose alone until you hear the thunder :)