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Frill-necked Monarchs are small monarchs. Their plumage is all black-and-white. They have a black "helmet" and an erectile white collar and a white front. The mantle, flight feathers and the uppertail are black, while the rump, lower back and scapulars are white. The only obvious difference between the sexes is that in males the chin has a black spot, while in females it is white. The eyes are surrounded by wide, light-blue rings. Both sexes have dark irises. The small, straight bill is light-grey. Legs and feet are grey. Juveniles look like a dirty adult females with a yellow bill with black tip and dusky upperparts.

The overall distribution of this species can be assessed, and specific locations where birds have been spotted can be found, based on individual sighting reports submitted by birdwatchers to ebird.org .

The global distribution of the Frill-necked Monarch is available HERE .

Frill-necked Monarchs are endemic to Australia. They have a limited range, extending along the eastern part of the tip of Cape York peninsula, with the Endeavour River as its southern boundary. They are hardly ever found on the western side of the Cape, along the Gulf of Carpentaria.

Frill-necked Monarchs have a preference for rainforest.

B. Hensen reports finding Frill-necked Monarchs at Iron Range NP, QLD, in December 2018.

J. Boettcher, FNQ Nature Tours spotted a Frill-necked Monarch at the same location in September 2020.