Bird watching - Feed them fresh fruit - Baltimore Orioles love oranges and Cardinals love grapes. Orioles love grape jelly too and if you put out either one, woodpeckers really like them too. Butterflies like them too.
How to get hummingbirds to nest! I love the mosaic look of the moss that humming birds sculpt onto their nests. Humming birds are very allusive but some people have actually trained them to trust the human hand.