One bird, plunging to gather mussels in shallow water.
All images are of one bird.
Lightening and cropping a full-resolution image of the head shows the characteristic dark tip on the beak.
Was cormorant sized, but colours indicate heron. Unfortunately could not get closer & didn't have my binoculars with me.
2 healthy chicks in Nest #7
Apodaca Provincial Park, Bowen Island, Greater Vancouver, BC, Canada
Roger Curtis Lighthouse, Bowen Island, Vancouver, BC, Canada