coots fulica atra showing aggressive fighting territorial behaviour in early spring and running across a still calm lake

aggression aggressive animal atra avian behaviour bird black bully calm chase chloropus common conflict coot coots countryside courtship crested duck ducks early eurasian face fauna feather feeding fight fighting fowl fulica habitat intruder lake mating moorhen nature ornithology outdoors pond ripple river running showing splash splashing splasing spring still surface territorial water waterfowl wetland white wild wildlife