Cuckoo video from Keith Hansen.
Keith asked me to post a link to his video of the cuckoo which shows the
undersurface of the bend of the wing.
According to Keith, this pattern is believed to be diagnostic for Common
Also I'd like to mention that I think David R. Moore's photos of the bird
are particularly nice.
Joseph Morlan, Pacifica, CA
"It turns out we're very good at not seeing things" - Jack Hitt