I was observing and photographing this group of birds from the other bank of the river, suddenly a deafening noise, all the birds making sounds accompanied by great movement, I took a burst of photos, which I later analyzed at home. A cormorant brought a large fish, that caught the attention of the snowy egret and mainly the Kelp Gull that was the most cunning and quickest to reach the prey and consume most of it, the cormorants remained indifferent.