Kiritimati Reed Warbler

The bokikokiko, Kiritimati reed warbler or Christmas Island warbler (Acrocephalus aequinoctialis) is a species of warbler in the family Acrocephalidae. It is found only on Kiritimati (Kiribati). The bokikokiko's diet has been composed largely of the weed Tribulus terrestris since the plant's introduction by European settlers in the late 18th century. The intricate feather pattern on its head has notably been considered an aphrodisiac by the indigenous population; in ancient times, the feathers were correlated with...