acquatic alert animal auritus awake beak beautiful beauty bird birds black cheeky clever cormorant couple dry duck duo environment estuary family fatigue feathers flight flock fly flying grass grassy great green group lake landing large launch little meadow migratory muscle nannopterum natural nature off onocrotalus perch perched phalacrocor pied pole reflection rhythm river span spread stand straight stump synchroniza synchronization synchronized take takeoff taking tree two valentine watch water wet white wing wings