Great Cormorants Birds Preen Feathers Resting on Rotten Log Sunk in Lake Water - close-up

great cormorants preen grooming pair phalacrocorax carbo feathers clean cormorants two male adult wings plumage view lake pond beak bill slow motion closeup resting large groom behaviour exotic great hygiene wildlife wild seoul shallow perched back couple female cormorant wooden log sunk water australia black black shag kawau black cormorant relax sunlight daytime