I have no bottom drain at this time. I think the pooh just sinks do the bottom and slowly dissolve over time. They do have rather large terds though for birds. In fact reading in the encyclopedia brittanica the mute swan, the bird I have, is the heaviest flying bird in the world. These are the same birds you saw in the story "The Ugly Duckling". They have that black knob on there nose. Beautiful birds, they hate humans though. Nobody here knows what they would do in my situation though huh.

Well lets just pretend there are no birds in there pooping. For a normal swimming pool do you need a bottom drain. Or would what I have at this time work. Thanks