The arrows are fletched with hane (feathers) about fifteen centimetres in length and can be the most expensive part of the arrow. Traditionally, the outermost tail feathers of large birds of prey were considered the finest. Many of these birds are now endangered – in particular the sea eagle – therefore, feathers of lesser eagles, swans, geese or even turkeys are being used in modern times. On the other hand, owl feathers were never used, as they were thought to be bringers of misfortune. They would use feathers from both the left and right wing, because wing feathers naturally curve left or right. Ya with feathers from the left wing are called haya and they spiral clockwise, whereas ya made from the right wing feathers are called otoya and they spiraled counter-clockwise.
