Jay-
I use FeatherFlex dekes and have lost the stakes to them many times. I always just find a small tree branch and it has worked just fine. I almost think that sometimes it makes it look more lifelike using a small branch because it will kind of bounce or bobble in the wind instead of spinning around.

I' m not sure, perhaps the Delta' s require a certain kind of stake...I bet if you look up their website you could contact them and ask about replacements.

Good Luck!