Bream Mortimer is described as a tall and slender man, characterized by his small, bright eyes and a distinctly curved nose. His appearance reminds one more of a parrot than other parrots, which often catches the attention of strangers when he is seen dining in restaurants. This surprise stems from the contrast between his human characteristics and his parrot-like features.

When Bream is spotted eating roast beef, onlookers can't help but feel that his true preference may lie with something more suitable for a parrot, like sunflower seeds. This whimsical portrayal by P.G. Wodehouse adds a humorous touch to his character, suggesting a playful disconnect between Bream's appearance and his eating habits.