What Animal Am I?

Clue 1: I am a type of waterbird. I wade in shallow lakes or lagoons.

Clue 2: I find food in water and mud using my hook-shaped bill.

Clue 3: I am a bird with a long thin neck shaped like the letter S.

Clue 4: I like to live in large flocks of other birds just like me.

Clue 5: I am a bird which can stand on only one leg for hours at a time.

Clue 6: I am a bird known for my beautiful pink feathers.