Grey Heron Perched on Pine Trees in South Korea in Summer

grey heron ardea cinerea perched pine tree branch greet partner sing opened bill open mouth sound throat call neck stretch green needle one nest bird squawking roh breathing attracting crying closeup attention screaming behaviour cry avian quack gray heron tongue shivering shaking beak pine tree flirting eastern great egret egret heron ardea alba modesta alba modesta two birds