I have always associated cormorants with the sea, but these ones were at Mizumachi Lake, which is far from the sea. They were perched in the trees and occasionally came down to the water. My photos were taken with a 360mm telephoto, so they are not so clear.

Order: Pelecaniformes; Family: Phalacrocoracidae
Phalacrocorax carbo
Great Cormorant = kawau

Location: Mizumachi Lake (see post here)