Not only must the parts of a bird be designed for flight but entire systems must be in place and integrated as a whole to allow any to be of use.
That bespeaks a planner who can see how the finished product will function before it is made.
“..Not only must the parts of a bird be designed for flight but entire systems must be in place and integrated as a whole to allow any to be of use...”
Absolutely, I agree with your conclusion too.
Too many factors have to work to allow flight, but then “that would be looking to closely...”