Nice models you have there, but you say you developed these..are you not aware of Bob Hoey's bird models? He was making models like this in the late 80's, early 90's.
Plans were published in various RC magazines I think.
Here's his beautiful turkey vulture model...
I would really like to build one of these and simply make it flap for aesthetics even if it didn't produce thrust. With the double surface ribbed airplane style wing they glide really well.