The Marbled Murrelet (MAMU) is 9.5-10" long. The genus name Brachyramphus (brach-ih-RAM-fus) is from the Greek brachys meaning short, and nymphos, or beak for very short bill. The species name marmoratus (mar-more-AY-tus) is Latin for marbled and refers to mottled or irregular spots and streaks of summer plumage.