The Yellow-billed Loon or White-billed Diver, (Gavia adamsii), is the largest member of the loon or diver family of birds, at 76-97 cm (30-38 in) in length, a weight of 4-6.5 kg (8.8-14.3 lb) and a 135-160 cm (53-63 in) wingspan. It usually appears larger than the similar Great Northern Diver.
