Bird In a Tux

I do not fly but waddle far. For fun I slide on my tummy. And if I have my eye on a mate I'll feed them fishes so yummy! Singing a love song is common for me. To attract a mate I'll croon. And if I leave the colony sometime I'll surely be back soon. Under the water I really can't breathe. But can hold my breath a short while. I spend my time mostly at sea. But when on shore I make humans smile. You'll point at me and giggle out loud. I know you think I'm cute! But don't try to capture me I plead. Just admire my black and white suit. A little bit like you humans I am. Sometimes I mate for life. Yet other times I play the field. Perhaps even cheat on my "wife"! So here I go to dive and plunge where the water is deep and cold. Just some things you should know about me. I'm amazing-if I may be so bold! for Archaic Poet's animal personification contest