This is a model from the book – Origami Design Secrets: Mathematical Methods for an Ancient Art, by Robert J. Lang – which I had purchased recently. I found this model quite complicated where the feet of the bird are concerned but managed to fold that part out to near satisfaction.
This model has 56 steps with some of these repeating for the feet. I have used kraft paper measuring approximately 10 inches in size to fold this model. It took me a bit of time to fold this as I used to spend a little time each day on this. But I guess, this model can be folded well within 2 hours of time.
How to fold the model:
Jonakashima has recorded a very good instructional video on folding Songbird I, with the permission of Robert J. Lang. I hope you find it easy to follow.
I am not very pleased with the way the model I have folded has turned out, I think its the kraft paper I used which made the folding of the feet a bit of a problem.