Amazing! Really great!

I have just started to play around with it. It seems to be very easy to understand, I really like the controls.

Great job! The script is clean and it’s already very useful. It would be nicer however if we could define the shape of the wing more precicely.
I have an idea: can you try to plug the nHair system, so that the hair curves act like deformators? Let’s say, we try to connect the dynamic curves to feathers geometry with a wire-deformer.

Thank you for the input, Scorpion_wacom! I sent you a response to your email. I like your ideas and would like to see if we could implement them!

Right now there's no support for tertial feathers. Their existance is mentioned in the script, but don't seem to have been added in the construction process the same as the other feathers. Any ideas?

EDIT: Okay, I see them now, but there's no control for them, and they're not parented to the bone closest to the body. Seems like that's not quite ideal.

I'm still not sure how this comment system works so if this gets duplicated I apologize! I'm trying to respond to ourfriendbrutus (all I see are buttons to edit or delete the post, but not respond to it!):

The tertial feathers are actually the name of the innermost three secondaries on real birds (http://www.falconsongstudios.com/Thesis/Images/SibleyWingGroups.jpg), they don’t have separate control or movement from secondaries, just a different shape. I only added them as a requirement for the model in order to keep the look/shape of the wing correct, otherwise I’d have just used secondary feather models. I don’t plan on adding control for the tertials because they’re really secondaries and a control for them would be kinda redundant.

Added to address edit comment: They aren't parented to the bone closest to the body (humerus) because in real birds feathers grow in "tracts" and the secondaries grow down the radius and tertials are the last feathers around the elbow. No flight feathers grow on the humerus. (http://www.falconsongstudios.com/Thesis/Images/FeatherTracts.jpg) Humeral feathers grow in the humeral tract on the humerus and I've been tempted to add those to close that gap between the wing and body, which is what happens in a real bird. However, I keep coming back to it and thinking that those feathers, as well as the lesser covert feathers, would be better solved by using a feather system like Dodo master (http://www.creativecrash.com/maya/downloads/scripts-plugins/character/c/dodo-master-feather-system-for-maya-update-v0-2--2/).

Nice Job.
It is really very helpful, thank you.