Flapping birds

Flap. Flap. Flap.

Today's post features three bird models that flap when you tug on them. Specifically, it features photos of these birds. I suppose it would have made more sense to take videos of them flapping, but hey.

The topmost bird is a traditional model based on the bird base. The bird on the left is a modern creation by Samuel Randlett, based on the waterbomb base. It has a much smoother action than the traditional model. The bird on the right is a variation of Randlett's bird by Paul Jackson.

The traditional bird has a property known as one-sidedness. In layman's terms, the entire outside of the model is derived from only one side of the paper. (Most origami paper is colored or patterned on one side, and white on the other. You will note that the model is completely patterned -- the white side of the paper is completely hidden.) The other two birds do not posess the one-sidedness property; in each model you can see the both the upper (patterned) and lower (solid colored) sides of the paper.

You will notice that the traditional bird is significantly smaller than the other two. This is a side-effect of the one-sidedness property: the usable surface area of the paper is reduced by a factor of 50%.

All three birds were folded from 5-7/8" squares of origami paper. The traditional model uses a standard patterned paper. The other models use pattern/solid duo paper. The traditional bird measures 4-3/8" from beak to tail-tip, with 3" tall wings. Randlett's and Jackson's birds both measure 5-1/2" from beak to tail-tip, with 3-1/8" tall wings.

Folding instructions for the traditional bird may be found in many books and on many websites; Origami USA offers some. Instructions for Randlett's bird may be found in Origami in Action by Robert J. Lang. Instructions for Jackson's variant may be found in Practical Origami by Rick Beech.

Be sure to check back next week, when we will take a look at another flapping beast.