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There are a few rocks in the middle of North Otter Lake which project just above or just below the water surface, depending on season. These have normally been used by the odd gull, but in 2021 I was surprised to see that a couple of cormorants had taken them over, sometimes accompanied by a heron.
These are from a recent trip to Nova Scotia. There is hardly a rocky island there that isn't inhabited by a line of cormorants. Probably double-crested, but they could be great cormorants.
Fishing with cormorants on the Li River in China. I don't know what species, but not double-crested. Taken on a cold and very overcast day well before digital cameras!