These look fantastic, it is a skill that takes a while to get good at, but does not anything take practise.
They are thought to have originated from Western Russia in a region called the Russian Karelia, which is next to Finland. They have spread throughout Europe. There are living makes in Finland, Solvenia, Romania, Russia, America, and Sweden where they have been commemorated on stamps. Probably many more countries.
I have met people in Devon and Somerset who as children were given fan birds by Austrian prisoners of war.
The only other person I know of making them in any quantity in this country is Owen Jones the oak swill basket maker.
Most of the fan birds are made from 2 pieces of wood and so have 3 sets of wings. 2 wings and one for the tail.
Have a look at my blog with some of the birds I have made
http://seanhellman.blogspot.com/2010/04/scots-pine-and-fan-birds.html
http://seanhellman.blogspot.com/2009/12/traditional-russian-toy.html and
http://seanhellman.blogspot.com/2009/12/traditional-russian-toy.html
It looks like pine you are using, what kind is it?
Rive the wings first and before they are fanned out, carve the body, I have found this to be the best way. Green is always best, but I have also done it from seasoned wood, just wet they hinge before bending.