Pre … Jun 7 - Jul 20. In flight, the wings are held in a shallow "V." The adult male is pale gray on the head, bac… This map depicts the range boundary, defined as the areas where the species is estimated to occur at a rate of 5% or more for at least one week within each season. Learn more. At close range, the face of our Northern Harrier looks rather like that of an owl; like an owl (and unlike most other hawks) it may rely on its keen hearing to help it locate prey as it courses low over the fields. This 16-24 inch, slender-bodied hawk has a long tail and wings, long yellow legs, distinct facial disks and a conspicuous white rump patch. Click here to return to the species description page . … Dec 21 - Feb 8. eBird data from 2014-2018. Northern Harrier Circus hudsonius. Year-round. Map created with ArcGIS. Photo gallery < > Feeding Behavior. Learn more. Fink, D., T. Auer, A. Johnston, M. Strimas-Mackey, O. Robinson, S. Ligocki, B. Petersen, C. Wood, I. Davies, B. Sullivan, M. Iliff, S. Kelling. This map depicts the range boundary, defined as the areas where the species is estimated to occur at a rate of 5% or more for at least one week within the breeding season. Estimated for 2018. Title Northern Harrier Range - CWHR B114 [ds917] Publication date 2016-02-0100:00:00 Presentation formats digital map FGDC geospatial presentation format vector digital data Other citation details These are the same layers as appear in the CWHR System software. EMAIL IF YOU WISH TO USE THIS RANGE MAP IN ANY WAY. Fink, D., T. Auer, A. Johnston, M. Strimas-Mackey, O. Robinson, S. Ligocki, B. Petersen, C. Wood, I. Davies, B. Sullivan, M. Iliff, S. Kelling. Non-breeding season. Northern Harrier Circus hudsonius Range map Data provided by eBird. Usually hunts by flying low over fields, scanning the ground; males tend to fly lower and faster than females. The northern harrier (Circus hudsonius) is a bird of prey. May find some prey by sound. These unusual raptors have a broad … The Northern Harrier is distinctive from a long distance away: a slim, long-tailed hawk gliding low over a marsh or grassland, holding its wings in a V-shape and sporting a white patch at the base of its tail. 2020. eBird Status and Trends, Data Version: 2018; Released: 2020. This map depicts the range boundary, defined as the areas where the species is estimated to occur at a rate of 5% or more for at least one week within each season. Northern Harrier Range Map. Predictive performance metrics; Certain products may be unavailable due to insufficient data. Northern Harrier Circus hudsonius Abundance animation Data provided by eBird. Estimated for 2018. This map depicts the range boundary, defined as the areas where the species is estimated to occur at a rate of 5% or more for at least one week within the breeding season. eBird data from 2014-2018. 2020. eBird Status and Trends, Data Version: 2018; Released: 2020. Learn more; Send feedback; Explore. Each gray-and-white male may mate with several females, which are larger and brown. Species Maps; … Range map: Pre-breeding migration; Range map: Breeding; Range map: Post-breeding migration; Range regional stats; Appendix. ALL SPECIES MAPS ON THIS PAGE ARE THE PROPERTY OF SOUTH DAKOTA BIRDS AND BIRDING, and may not be used, copied, or distributed on any other website, blog, or other distribution media without written approval by the site owner. Photo Gallery. Northern Harrier Circus hudsonius . … https://doi.org/10.2173/ebirdst.2018, Certain products may be unavailable due to insufficient data. . Its prey, consisting of mostly rodents and small birds, is detected using extremely keen hearing. Breeding season. It breeds throughout the northern parts of the northern hemisphere in Canada and the northernmost USA. Occurrence. While many taxonomic authorities split the northern harrier and the hen harrier into distinct species, others consider them conspecific. Cornell Lab of Ornithology, Ithaca, New York. Learn more. The Northern harrier, formerly known as the marsh hawk, hunts primarily on the wing and may cover up to 100 miles per day. Up close it has an owlish face that helps it hear mice and voles beneath the vegetation. Range. Cornell Lab of Ornithology, Ithaca, New York. https://doi.org/10.2173/ebirdst.2018, Certain products may be unavailable due to insufficient data. .