Original sentence: Adults have paler grey-blue upperparts than the Peregrine, and often have a buff wash to the barred underparts, whereas the larger species has a white background colour.Evidence that Peregrines and Barbaries are separate species includes that the Barbary breeds much earlier in the year, that they do not interbreed even though they may occupy adjacent territories, and that their flight styles and ranges are considerably different.The Barbary Falcon is similar to the Peregrine Falcon, but smaller at 33–39cm length with a wingspan of 76–98cm.This species is often considered to be a subspecies of the slightly larger Peregrine Falcon, Falco peregrinus
Edited sentence: Adults have  paler grey-blue upperparts than the Peregrine, and often have a buff wash to the barred underparts, whereas the larger species has a white background colour.Evidence of the differences between Peregrines and Barbaries includes that the Barbary breeds much earlier in the year, that they do not interbreed even though they may occupy tangent territories, and that their flight styles and ranges are considerably different.The Barbary Falcon is similar to the Peregrine Falcon, but smaller at 33-39cm length with a wingspan of 76-98cm.This species is often erroneously considered to be a subspecies of the slightly larger Peregrine Falcon, Falco peregrinus.While the untrained eye often sees several species of falcon as the same, an experience falconer or raptor biologist will recognize the distinctions immediately