The Great Blue Heron (Ardea herodias) is one of the largest birds in Colorado. It can be seen flying overhead with its large wings cutting the air. A wading water bird, the beak on the Great Blue is impressive indeed. Pictures abound of this bird with a fish locked in its bill. A solitary feeder, it is rare to see more than one Great Blue at a time unless in their communal rookery.
I know it is anthropomorphic, but the gleam in this birds eyes looks predatory indeed. A small culvert is just out of view. The turbulence of the water flowing into the pond must be attracting fish.
I have seen this specimen hanging out at a small pond near an office building. There was a steep slope down to the water so it was difficult to set up the tripod and inch my way closer so these shots were taken from a greater distance and the zooms are grainy. I was watched continuously as well and the bird took to flight before I could get within 30 yards.