| Ostriches | | Rheas | | Kiwis | | Cassowaries | | Tinamous | | Waterfowl | | Landfowl | | Nightjars | | Oilbird | | Frogmouths | | Owlet-nightjars | | Treeswifts, Swifts, Hummingbirds | | Turacos | | Bustards | | Cuckoos | | Mesites | | Sandgrouse | | Doves, Pigeons | | Cranes, Rails & relatives | | Grebes | | Flamingos | | Shorebirds | | Sunbittern, Kagu | | Loons | | Penguins | | Tubenoses | | Storks | | Gannets, Cormorants & relatives | | Pelicans, Ibises, Herons & relatives | | Hoatzin | | Birds of Prey | | | New World Vultures | | | Secretary Birds | | | Ospreys | | | Sea-eagles | | | Booted Eagles | | | Harpy Eagles | | | Serpent-eagles | | | Buteos | | | Honey-Buzzards, Bazas | | | Kites | | | Harriers | | | Accipiters | | | Elanine Kites | | | Old World Vultures | | Owls | | Mousebirds | | Cuckoo roller | | Trogons | | Hornbills, Hoopoes, Wood hoopoes | | Rollers, Kingfishers, Bee-eaters & relatives | | Woodpeckers and Relatives | | Seriemas | | Falcons, Caracaras | | Parrots | | Perching birds (Songbirds) |
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Pacific marsh-harrier
(Swamp harrier)
(Australasian harrier)
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Circus approximans
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PEALE, 1848 |
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| | Number of Subspecies: | 00 | | Information Source for Taxonomy: | del Hoyo, J., Elliott, A. & Christie, D.A. eds. (1994) HBW. Vol. 2
| | Body length: | 50 - 61 cm | | Wingspan: | 121 - 142 cm | | Weight: | 392 - 1080 g | | IUCN status: | LC (Least Concern)
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