<i><b>The Snowy Owl -</b> The Snowy Owl is a large, diurnal white Owl that has a rounded head, yellow eyes and black bill. The feet are heavily feathered. A distinctive white Owl, their overall plumage is variably barred or speckled with thin, black, horizontal bars or spots. Females and juveniles are more heavily marked than males – adult males may be almost pure white, although they have up to three tail bands. Adult females are distinctly barred throughout, and have from four to six tail bands. Immatures are very heavily barred throughout, and dark spotting may codominate or dominate the overall plumage. Snowy Owl calls are varied, but the alarm call is a barking, almost quacking krek-krek-krek-krek; the female also has a softer mewling pyee-pyee-pyee-pyee or “prek-prek-prek”… </i>
So unlike the one they use in the Harry Potter films, this Hedwig is actually female. They use male birds to portray her in the film because a bird with an all white plumage looks more impressive they think! <i>bit of unless knowledge for you eh?