Individuals of this very large new world vulture are usually 46 to 55 inches from head to tail with a wingspan of up to 9.8 feet. While there is some sexual dimorphism - the male tends to be larger than the female - the size difference is minimal and data on sizes of the sexes overlap. An adult G. californianus has a distinguishing orange-red head and neck which is bare skin except for sparse black feathers on the forehead. The body is feathered in black with large white patches on the underside of the wings; a black feather ruff rings the neck. The sexes are alike in coloring and plumage.
Juveniles of this species are covered in gray down, which is replaced by adult plumage at 5 to 7 months of age. Even after full mature flying feathers are grown, a young California condor retains the dark gray color of its head for 4 to 5 years.
( http://www.peregrinefund.org/condview.html; Greenway 1967; Mountfort 1988; Koford 1953)
Range mass: 9000 to 11000 g.