I always thought they opened their mouths to catch fish. This guy speared this mullet. Maybe by accident or do you think this is common practice?
From http://www.allaboutbirds.org/guide/great_blue_heron/id Hunting Great Blue Herons wade slowly or stand statue-like, stalking fish and other prey in shallow water or open fields. Watch for the lightning-fast thrust of the neck and head as they stab with their strong bills.
I always thought they grabbed them too.
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Makes a lot of sense. Evolution has a way of implementing such features for productivity… ie thumbs! Would have thought they grabbed them also, but if you look at that beak… you know why it’s the way it is now.
Edit: FWIW, I’m not trying to start an evolution vs. creation argument.
Them long legged debbils definitely spear the bluegills in my pond. I once came around the curve by the pond and came upon a 3/4lb. bluegill flopping in the middle of my drive with a puncture wound right behind it’s gills. I looked up just in time to see the heron flying over the dam. I don’t see how a heron can get a bream that big down his skinny neck. GBH’s are lucky they are protected and don’t really taste very good.