• BirdForum is the net's largest birding community dedicated to wild birds and birding, and is absolutely FREE!

    Register for an account to take part in lively discussions in the forum, post your pictures in the gallery and more.

Papuan Harrier - BirdForum Opus

Circus spilothorax

Identification

47-61 cm, a large harrier
Male

  • Upperside mostly grey
  • Black streaking on crown and neck
  • Black lesser and medial coverts and primaries
  • Underside mostly pale
  • Black on primaries and primary coverts
  • Throat streaked black and white or in central highlands solidly black

Female:

  • Upperside brown with paler rump and some banding on tail
  • Underside paler, on body heavily streaked with reddish brown
  • Wing underside mostly pale with coverts heavily spotted and barred in reddish brown

Variation

A dark morph of the male is mostly dark grey to blackish with just a few paler areas such as some streaks and primary windows.

Similar species

A dark-throated male can remind of a very contrasting Hen Harrier male (which is not expected anywhere close to the range). The female carries some similarity to the female Swamp Harrier

Distribution

Found on the island of New Guinia, both in the area belonging to Indonesia and in Papua New Guinea.

Taxonomy

This is a monotypic species[1].

This species has been split from Eastern Marsh Harrier

Habitat

Open habitats including grassland, swamps, floodplains and wetlands, and specifically for foraging also attracted to agricultural areas and burning areas.

Behaviour

Nests on ground among tall grasses.

Vocalisation

Unknown

References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2019. The eBird/Clements Checklist of Birds of the World: v2019. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. del Hoyo, J., N. Collar, and J. S. Marks (2020). Papuan Marsh-Harrier (Circus spilothorax), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.easmah2.01

Recommended Citation

External Links

Top