A Corviknight's feathers are not as naturally sharp as a Skarmory's, and the blade birds of their Gigantamax form are particularly vulnerable to losing their aerodynamic shape to rust. Lacking arms, these pokemon can do little on their own to avoid this fate, but there are many around to help. Corvisquire apprentice themselves to their final form, using their deft manipulation of rocks and other tools to polish their masters' natural armor, and in return gain both protection from stronger pokemon and knowledge of the tricks they will need to battle after evolution.
Yet some Corvisquire are proud pokemon; too proud, in fact, to submit to the teachings of a master. They gather flocks of Rookidee around themselves and carve out a small territory of their own,rejecting the very notion of evolution, for they fear a Corviknight's armor would only weigh them down. Some have compared these flocks to sky bandits, noting their tendency to aggressively raid Corviknight and tame Corvisquire nests – and even human "nests", at times. But others, noting the courage with which they take on other pokemon and their long flights on wings which seem to blend into the sky, call them the "Free Corvisquire" and see them as symbols of liberty.
Knights in medieval Galar (and at times, as far afield as Kalos) would seek out Corvisquire to do for their own equipment what they did for Corviknight, but were often disappointed, in no small part because they found the free Corvisquire easiest to capture. Military handbooks that survive recommend against this practice, claiming human squires to be far more skilled and easier to work with. Yet Corviknight are found in the retinues of Galar's most legendary pirates and sky-kings, and invariably they are said to meet their trainers as Corvisquire...