I can't tell much about the white one because of the angle. Try to take another photo from the side, down low, so we can see how it stands. The roos seem to stand a bit taller, and thier feathers seem to point backwards even when they are younger, (but not always.) The beak looks barely a tad "biggish" on the white one, but it could be you had the camera close and the view zoomed out.... so, I remain totally useless and non-committal on the white bird. Sorry for rambling.