Surnia ulula

This question needs explaining a little as I have found 20 from the hawk owl family, these being :

# Sooty-backed Hawk Owl - Ninox theomacha goldii

# Christmas Island Hawk Owl - Ninox natalis

# Oriental Hawk Owl - Ninox scutulata lugubris

# Bismarck Hawk Owl - Ninox variegata superior

# Moluccan Hawk Owl - Ninox squamipila forbesi

# Madagascar Hawk Owl - Ninox superciliaris

# New Guinea Hawk Owl - Uroglaux dimorpha

# Brown Hawk Owl - Ninox scutulata

# Northern Hawk Owl - Surnia ulula

# Manus Hawk Owl - Ninox meeki

# New Britain Hawk Owl - Ninox odiosa

# Solomon Islands Hawk Owl - Ninox jacquinoti roseoaxillaris

# Philippine Hawk Owl - Ninox philippensis centralis

# Andaman Hawk Owl - Ninox affinis rexpimenti

# Speckled Hawk Owl - Ninox punctulata

# Ochre-bellied Hawk Owl - Ninox ochracea

# Mindoro Hawk Owl - Ninox mindorensis

# Togian Hawk Owl - Ninox burhani

# Cinnabar Hawk Owl - Ninox ios

# Little Sumba Hawk Owl Ninox sumbaensis

Bubo, Strix, Noctua, Ulula.

Bubo is mostly used.

Yes. Many species including:

Goshawk

Cooper's hawk

Sharp shinned hawk

Red Tailed hawk

Rough legged hawk

Golden eagle

Bald eagle

Peregrine falcon

Kestrel

Merlin

Gyrfalcon

Red shouldered hawk

Broad winged hawk

Osprey

Northern harrier

Swainson's hawk

Great gray owl

Barn owl

Barred owl

Screech owl

Hawk owl

Horned owl

Short eared owl

Long eared owl

Snowy owl