BirdKit.com
These model kits, designed by Nathan Chronister, are your best choice for getting started in building your own ornithopters.

EV Series Ornithopters by Horst Räbiger
The EV series ornithopters were a significant contribution to the development of flapping-wing flight, the first to combine mechanically driven twisting of the wings with a thick airfoil instead of membrane wing. Räbiger also includes some great historical information and technical data about aspects of ornithopter design.

Technical University of Delft
This research program in the Netherlands has produced the Delfly, which is a small, hoverable radio-controlled ornithopter that can carry a camera. It is being applied for military use.

TrueFly
Albert Kempf's flying toucan introduced a flexible foam wing with actively driven wing twist. His web site describes the ornithopter and also has a great section on how birds fly.

Bird Flight Web Site
This is a separate web site that I created, which focuses on flapping-wing flight in nature, instead of ornithopters. It has information about birds, bats, pterosaurs, insects, and fish.

Tropic Teleflight
This story, part of a collection by Jody Rawley, takes place in a future Miami, where teams compete to dominate the air with remotely-piloted aircraft. One of the teams has robotic pelican ornithopters.