Four siblings of young Goosanders (Mergus merganser) quickly checked all possible hides of fish inder the stones of different size near and under the bridge. In 15 min they cathched 4 or 5 fishes of different size and then flew away together – as arrived. Nioman river in Hrodna city, W Belarus, 27-08-2022 Several pictures and full story in Belarusian here: https://birdwatch.by/gallery/harrier/vyalikiya-savuki-paspyakhovaya-moladz Некалькі здымкаў і гісторыя пра чацьвёра маладых вялікіх савукоў па-беларуску тут: https://birdwatch.by/gallery/harrier/vyalikiya-savuki-paspyakhovaya-moladz