Blue-capped ifrit

The blue-capped ifrit (Ifrita kowaldi), is a species of small passerine bird in the monotypic family, Ifritidae, native to the montane rainforests of New Guinea.. These birds are insectivorous and are notable for their distinctive blue crown and presence of batrachotoxin, a potent neurotoxin, in their feathers and skin. This chemical defense is believed to come from their diet, particularly Choresine beetles. Despite their toxicity, blue-capped ifrits are non-aggressive and typically found in small groups within high altitude forest habitats. Although they are currently listed as Least concern by the IUCN, their population is slowly declining due to habitat disturbance and limited conservation measures.

The blue-capped ifrit is 16–17 cm (6.5–6.5 in) long and weighs 34–36 g (1.2–1.3 oz). The bird shows brown upperparts (top side of the bird including head, back, wings, and tail) with finely dotted wing edges and light-yellow underparts (the underside of bird, including belly, throat, chest, and under the wings and tail).

The head is marked with a bright blue cap outlined in black, a small black spot on the crown, and a long white stripe running besides the eye. A thin black strip is within this strip, and the eye itself is encircled by a narrow white ring.

Ifrits tend to have more stout body shapes with broad chests. Their wings are short and rounded while their legs are booted, having feathers down to their stout and clawed feet.

The species is sexually dimorphic, with ear streak coloration being white in males and more tawny yellow in females. Additionally, males have darker markings around the eyes and have more vivid coloration on the head and neck, females have paler markings around the eyes, and juveniles resemble females but have a light brown forehead.