Species names in all available languages
Language	Common name
Arabic	مرزة الدجاج/الشمال
Bulgarian	Полски / Американски блатар
Catalan	arpella pàl·lida comuna/americana
Czech	moták pilich/moták severoamerický
Danish	Blå Kærhøg/Amerikansk Kærhøg
Dutch	Blauwe Kiekendief/Amerikaanse Blauwe Kiekendief
English	Hen/Northern Harrier
English (United States)	Hen/Northern Harrier
Faroese	Fenheykur/Mýriheykur
French	Busard Saint-Martin ou B. des marais
French (Canada)	Busard Saint-Martin d'Eurasie ou B. des marais
French (France)	Busard Saint-Martin ou B. des marais
German	Korn-/Hudsonweihe
Greek	Χειμωνόκιρκος/Αμερικανικός Χειμωνόκιρκος
Hebrew	זרון תכול/אמריקני
Icelandic	Blá-/arnheiðir
Japanese	ハイイロチュウヒ／アメリカハイイロチュウヒ
Norwegian	myrhauk/mørkmyrhauk
Polish	błotniak zbożowy/amerykański
Portuguese (Portugal)	Tartaranhão-cinzento/Tartaranhão-cinzento-americano
Russian	Полевой/Американский лунь
Serbian	Poljska eja/američka poljska eja
Slovak	kaňa sivá/americká
Slovenian	Pepelasti/Ameriški lunj
Spanish	Aguilucho Pálido/de Hudson
Spanish (Mexico)	Gavilán Pecho Gris/Rastrero
Spanish (Spain)	Aguilucho pálido/de Hudson
Swedish	blå kärrhök/amerikansk kärrhök
Turkish	Gökçe/Amerika Delicesi
Ukrainian	Лунь польовий/американський

Northern Harrier Circus cyaneus

Kimberly G. Smith, Sara Ress Wittenberg, R. Bruce Macwhirter, and Keith L. Bildstein
Version: 2.0 — Published September 30, 2011

Introduction
Appearance
- Similar Species
- Detailed Description
- Plumages
- Molts
- Bare Parts
- Linear Measurements
- Mass
Systematics
- Geographic Variation
- Subspecies
- Related Species
Distribution, Migration, and Habitat
- Distribution in the Americas
- Distribution Outside the Americas
- Nature of Migration
- Timing and Routes of Migration
- Migratory Behavior
- Control and Physiology of Migration
- Habitat in Breeding Range
- Habitat in Migration
- Habitat in the Overwintering Range
- Historical Changes to the Distribution
- Fossil History
Diet and Foraging
- Feeding
- Diet
- Food Selection and Storage
- Nutrition and Energetics
- Metabolism and Temperature Regulation
- Drinking, Pellet-Casting, and Defecation
Sounds and Vocal Behavior
- Vocalizations
- Nonvocal Sounds
Behavior
- Locomotion
- Self-Maintenance
- Agonistic Behavior
- Spacing
- Sexual Behavior
- Social and Interspecific Behavior
- Predation
Breeding
- Phenology
- Nest Site
- Nest
- Eggs
- Incubation
- Hatching
- Young Birds
- Parental Care
- Cooperative Breeding
- Brood Parasitism
- Fledgling Stage
- Immature Stage
Demography and Populations
- Measures of Breeding Activity
- Life Span and Survivorship
- Disease and Body Parasites
- Causes of Mortality
- Range
- Population Status
- Population Regulation
Conservation and Management
- Effects of Human Activity
- Management
Priorities for Future Research
Acknowledgments
About the Author(s)

Multimedia
- Photos
- Audio
- Video
- Figures
Tables and Appendices

Revision History

References

Revision History

Birds of North America

Version 2.0
Revision
September 30, 2011
Northern Harrier Circus cyaneus

Authors

Kimberly G. Smith, Sara Ress Wittenberg, R. Bruce Macwhirter, and Keith L. Bildstein

Revisors

Kimberly G. Smith and Sara Ress Wittenberg

Recommended Citation

Smith, K. G., S. R. Wittenberg, R. B. Macwhirter, and K. L. Bildstein (2011). Northern Harrier (Circus cyaneus), version 2.0. In The Birds of North America (A. F. Poole, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bna.210

Recommended Citation

Smith, K. G., S. R. Wittenberg, R. B. Macwhirter, and K. L. Bildstein (2011). Northern Harrier (Circus cyaneus), version 2.0. In The Birds of North America (A. F. Poole, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bna.210