The uvs are packed prety inefficiently, looks kind of like automatic unwrap.
You can do cool stuff, for example, rotate every second wing so the angles match up and make better use of the uv space.
Hmm the overall shape seems a little off. The main body seems a little thick . Also it seems like you could have reused alot of the texture space to get more resolution of your textures.Like the propeller for instance you seem to happed each individually when you could have used one mapped propeller for all for.
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You can do cool stuff, for example, rotate every second wing so the angles match up and make better use of the uv space.