Thank you Lynn. the beauty of the glass is the reason I wanted to use it. you are right, no drainage and I would be sure to drown it. guess the Swan will have to go back on the top shelf until I can find a use for it.
I'll just leave "Tippy" in the pottery and hope it can swim.
Probably should put in something else, but I have so much of the Roseville pottery and would like to use it instead of having it behind closed doors. I think before I run out to get another baby, I'll consider more carefully their winter home.