One of the most charismatic, yet underappreciated birds on the planet has got to be the Crested Auklet (Aethia cristatella). Crested auklets are ridiculously goofy-looking birds during their summer breeding season.
Most species of seabirds are pretty unassuming in appearance, with a standard palette of blacks, greys, white, and browns, and the sexes are frequently similar. -Part of the reason for this contrast with much showier avian groups like parrots and songbirds is because of the parental investment that seabirds engage in. Most species are long-lived and only raise one or two chicks a year. In Crested Auklets, both parents engage in parental care, often sharing incubation and feeding duties – although at least one study showed that CRAU males tended to brood and defend chicks more often, while females tended to forage and bring food back for the chicks more often. This serial monogamy means that there is no pay-off for the male bird to copulate with as many females as possible, as they all already have a mate, a brood, and it takes a lot of work to care for and raise the single chick.