Symposiachrus brehmii
The Biak Monarch (Symposiachrus brehmii) is a striking passerine endemic to Biak Island, Indonesia, immediately identifiable by its glossy black upperparts contrasting sharply with a pristine white belly and vent. Measuring approximately 15-16 cm in length and weighing around 12-15 grams, this charismatic species exhibits a dark, stout bill and legs, along with a dark iris. There is no significant sexual dimorphism, with males and females appearing virtually identical. Taxonomically, it belon...
The Biak Monarch inhabits primary and mature secondary lowland rainforests, typically found from sea level up to elevations of approximately 600 meters.
Primarily insectivorous, the Biak Monarch feeds on a variety of invertebrates, gleaning them from leaves and bark within the forest canopy and subcanopy.
This monarch is generally observed singly or in pairs, frequently joining mixed-species foraging flocks to enhance vigilance and foraging efficiency. Its daily activity is diurnal, actively gleaning insects from foliage and branches within the forest mid-story and subcanopy. Foraging often involv...
The Biak Monarch is strictly endemic to Biak Island, located off the northern coast of Papua, Indonesia, in the western Pacific. This species is non-migratory, residing year-round within its confined island home. Its entire global distribution is restricted to the remaining primary and mature sec...
Critically Endangered
- The Biak Monarch is a true island specialist, found nowhere else in the world except Biak Island, Indonesia. - It is one of the most endangered birds in the Monarchidae family, classified as Critically Endangered by the IUCN. - Despite its striking black and white plumage, there is no noticeabl...