On the Rescreatu Wikipedia (which may not be all that reliable), it says Uilus has a rarity of 0%, which is only shared by CS and seasonal creatu. However, in the Pet Directory, it says Uilus has a rarity of 0.8%. I'm trying to hunt down an Uilus egg as part of some crazy plot to get one of each creatu I can, but after struggling with it for over half an hour now I'm wondering if the first percentage actually was accurate and, if so, why.
If it isn't, any advice? |D; I've been constantly refreshing on Scria and hoping it'll pop up. Unless I'm missing something incredibly obvious, which isn't too far-fetched.

It is only available during Christmas, and even then you have to click a button to activate your hunt. When activated the rarity is 0.8, but at all other times it is 0

Oh, I see! Thank you. I'm wondering why the wiki doesn't say it's seasonal, then.
Time to go do something more productive. XD