Great Blue Heron stalking Mergansers

This Great Blue Heron started strolling the pools until it spotted Mergansers chasing fish. The heron then stalked the Mergansers, going upstream and down hoping they would find it some fish.
Some good close ups and, yes, the heron does get a fish, although I missed the video but got great stills (a few included).
New Brunswick, Canada

[@Denverdaytrippers]

Very cool!