Which of the following would not be a characteristic of a "Slipped wing"?

A wing exhibiting equal feather distribution is characteristic of a well-formed wing, meaning the feathers are arranged correctly and symmetrically. In a slipped wing, you would expect to see a disorderly arrangement, which includes overlapping feathers or feathers that are not aligned properly. The other options describe specific types of irregularities that can occur in a slipped wing, such as individual feathers overlapping inappropriately, the entire wing being out of alignment with the secondaries, or feathers being arranged in reverse order. Thus, equal feather distribution is not a feature of a slipped wing and is the reason this choice is correct.