For interior-dwelling landlubbers used to seeing Double-crested Cormorants, P. auritus, the comparatively massive Great Cormorants are a shock. The wingspan is nearly a foot longer, and a Great Cormorant is almost twice the weight of a Double-crested, making for a much bulkier looking bird. The bird in this photo is an adult coming into breeding plumage, and it sports a distinctive white flank patch, a white throat, and whitish feathering is developing on the neck.
At one point, I was standing far out on the Barnegat breakwall, keeping a loose eye on a cormorant that was feeding nearby. When I saw it bob to the surface in an apparent struggle with something, I pivoted the camera rig to our protagonist and watched to see what would play out.
This experience calls to mind that stupidly inaccurate expression "eats like a bird", which is used to refer to a person that eats very little food. Believe me, you don't want to truly "eat like a bird" or you'll be paying Weight Watchers overtime. The maximum weight of a cunner is 2.2 lbs., and I'd say that the one eaten by our cormorant weighed a pound, probably - maybe more, possibly a bit less. As a Great Cormorant weighs about seven pounds, this bird just ingested one-seventh of its bodyweight in a few seconds. For a 200 lb. man to match this feat, he would have to consume about 29 lbs. of food at once. Even Joey Chestnut could not come close to that.
My advice? Don't eat like a bird.