Kahu, The Harrier Hawk (Circus approximans)
- Provides facts about the feeding habits and courtship behavior of this accipiter. Includes an illustration.
- http://www.nzbirds.com/birds/kahu.html

Marsh Harrier (Circus aeruginosus)
- Facts about this bird's diet, habitat, behavior, and migration. Includes a photo.
- http://www.hawk-conservancy.org/priors/marsharr.shtml

Northern Harrier (Circus cyaneus)
- Image of this bird in flight and facts about its habitat and physical traits. Includes range maps.
- http://www.nenature.com/NorthernHarrier.htm