Bird species in the movie"Happy Feet"

I recognize the Emperor Penguin, just by looking on the movie poster. What are those other penguin species in the movie? What are those strange looking seagull birds?

Considering Happy Feet is a computer generated animated film, do we have any reason to think the characters are biologically accurate?

No, I know that it is a fictional movie

The main penguins are of course emperors.

Lovelace is a rockhopper penguin.

The hispanic penguins are Adelie penguins.

The seagull-like birds are skuas.

Of course, with all my franctic Wikipedia linking, I could have just linked you to the Happy Feet wikipedia entry, which gives the species of all the characters: