Superbowl

Photos by Takashi Muramatsu

Arguably the largest living owl species.

Great Grey owls can be longer, but the body mass of the BFO is about 2.5x as much.

Eurasian Eagle Owls can have the same weight and wingspan, but the EEO getting that big is less common than it is for the BFO.

Wikipedia has more details if you are so interested in the hoo's the biggest debate.

A pair field study of the species showed males weighing from 2.95 to 3.6 kg (6.5 to 7.9 lb), while the female, at up to 2.95 to 4.6 kg (6.5 to 10.1 lb), is about 25% larger.

Blakiston's fish owl measures 60 to 72 cm (24 to 28 in) in total length