F/5,6, 1/400, ISO 125.

Tree Swallow

How do you make a water bed more bouncy?

Use spring water.

Interesting Fact: The Tree Swallow—which is most often seen in open, treeless areas—gets its name from its habit of nesting in tree cavities. They also take readily to nest boxes.  ( http://www.allaboutbirds.org/guide/tree_swallow/lifehistory )