töyhtöiseen

Töyhtöinen is a Finnish term that translates to "tufted" or "crested." It is primarily used in ornithology to describe birds that possess a distinct crest or tuft of feathers on their head. This characteristic can be prominent in various species, adding to their visual distinctiveness and playing roles in communication, display, or camouflage.

Several bird species are known for their prominent head tufts. For example, the Eurasian Jay (Garrulus glandarius) is sometimes referred to as a "töyhtöinen varpunen" in informal contexts due to its subtle crest, though the term is more broadly applied. More striking examples include certain species of crested grebes, such as the Great Crested Grebe (Podiceps cristatus), whose elaborate head plumes are a key feature of their courtship displays. The term can also be applied to other birds exhibiting similar feather formations. The presence and appearance of the tuft can vary significantly between species, sexes, and even during different times of the year, such as during the breeding season. The tuft's function is often related to species recognition, attracting mates, or signaling social status within a flock.