Hovering
http://www.youtube.com/v/Hrlr45uGapQ&hl=en_US&fs=1&rel=0&color1=0x234900&color2=0x4e9e00&hl=en<\/embed><\/object><\/div>";" alt="">
“Biologist Doug Altshuler has turned his lab into a kind of hummingbird training center, where he can test the limits of their aerial agility. The key, he says, is hovering.”
From the Hummingbirds: Magic in the Air episode of PBS Nature
[Thanks Dōshin!]