Stjertfjær

Stjertfjær are the tail feathers of a bird. They are typically longer and more prominent than other feathers on the body and play a crucial role in flight, particularly in steering and balance. The arrangement and type of stjertfjær vary significantly between different bird species, reflecting their diverse ecological niches and behaviors. For example, birds that rely on agile flight, such as falcons, often have broad, rounded tail feathers for maneuverability, while those that fly long distances may have more pointed or streamlined stjertfjær for efficient propulsion.

In many species, stjertfjær are also important for sexual display. Males may possess elaborate and brightly colored stjertfjær to attract mates, as seen in peacocks or birds of paradise. The length, shape, and coloration of these feathers can be a key factor in mate selection. Beyond flight and display, stjertfjær can also assist in other functions, such as thermoregulation or providing a tactile sensation for the bird. The structure of stjertfjær, like all feathers, consists of a central shaft (rachis) from which barbs extend, which in turn branch into barbules. This intricate structure provides both strength and flexibility.