Oh wow I just looked them up.

Although it is quite exciting to see a leucistic bird in the wild, they do face certain challenges that make their lives difficult. These birds, without the protective camouflage that other animals have, become more vulnerable to predators. Additionally, plumage colors play an important role in courtship and mating; as such, many leucistic birds may be unable to find suitable mates. Last but not least, the dysfunctional melanin production in leucistic bird’s feathers may even make it harder for them to fly. Since melanin is an important structural component to feathers, birds lacking the proper amount of this pigment may have weaker feathers that are more prone to breaking and less able to insulate the body against cold and damp.

So whats the diff between leucistic and a morph.. is it that the morph becomes its own genetic species rather than a rare genetic anomaly?