For 10 points, name these birds, which include the Emperor variety.
Species like Loligo gahi, Munida gregaria and Thysanopsetta naresi are some of the principal food for the Gentoo variety of these animals, a species that are characterized by the white patches above each eye.  The African variety of these animals primarily occupy the Benguela Current and are sometimes called Jackasses for their distinctive braying.  A yellow crest is one of the distinguishing marks of the most populous species of these animals, while a type of these animals sometimes called Fairies tend to only have one mate and are commonly named "Little Blue".  Also coming in (*) Macaroni form, one type of these animals constantly rotate members in the middle of a huddle to the outside of the group to maintain warmth while nursing eggs during winter.  For 10 points, name these birds, which include the Emperor variety.
Species like Loligo gahi, Munida gregaria and Thysanopsetta naresi are some of the principal food for the Gentoo variety of these animals, a species that are characterized by the white patches above each eye.  
{penguins}