1. For bird to refresh - but I must say I only saw birds there when I installed the pump. After that? Never again. *lol*

2. The birdhouse is for birds to have little birdies (I think, as no kissing sounds come from there *laughs*) and it's where the peeps feed them (that's where they take the bread).

3. When they are not in the mood for showering (what I DO think it's pretty gross). The only reason I could think about it to avoid using the shower when you still have clogged shower problems.