Hi,
this is one of the ornithopter that i made .its very easy to make it .all you need is
1.white glue
2. icecream sticks(nearly 10)
3. papers(tissue)
4. paper clips.
5.rubber bands,
6.craft knife
7.steel scale
8.a pair of scissors
it hardly took me 2 hours to meke it to fly it ,thats how easy it is.

Step 1: Crank

the crank produces the flapping motion in the wings

Step 2: Conneing Links

these links connect the crank to the wing spars

Step 3: Wings

in the first pic u r seeing the rubber band catch and the tail and in the second u can see the main wing

Step 4: Construction

these pictures are selp explanatory and as yo go thru them you can easily get how they are made.

Step 5: Making-spar-frame

for making the spar you need to glue the wires from the paper clip as shown ,you may need pretty good amount of reinforcement here to make it durable

Step 6: Complete

once u completed it let the glue get dry then toss it after winding the rubber band through the crank
it flies opretty well ,but depends how u made it mine flew for nearly 15 m