Hen Harrier
Hen HarrierHen HarrierHen HarrierHen Harrier

Hen Harrier

Circus cyaneus

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~10% · With luck
at Manas National Park
193 Verified sightings at Manas National Park From 2019 to 2026
18,357 Verified sightings across all 104 parks From 2019 to 2026
January Best month highest sighting rate
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Hen Harrier

The hen harrier (Circus cyaneus) is a bird of prey. It breeds in open areas such as marshes and grasslands in Eurasia and is migratory, moving further south outside of the breeding season. Birds in milder regions, such as France and Great Britain, may be resident year-round, but the higher altitudes are largely deserted in winter. The species is sexually dimorphic; males are smaller and mostly grey and white with black wingtips, whereas females average larger and are predominantly brown and have buff underparts with brown barring. Both sexes have a white rump patch, although it is more noticeable on females and juveniles.

The term "hen harrier" refers to its former habit of preying on free-ranging fowl. The northern harrier (Circus hudsonius) was formerly considered to be a subspecies of the hen harrier. In 1758 the English naturalist George Edwards included an illustration and a description of the hen harrier in the first volume of his Gleanings of Natural History. He used the English name "The blue hawk". Edwards based his hand-coloured etching on a bird that had been shot near London. When in 1766 the Swedish naturalist Carl Linnaeus updated his Systema Naturae for... Wikipedia →

Closest Relatives at Manas National Park

Pied Harrier
LC

Pied Harrier

☀️ Diurnal Bird

Circus melanoleucos

Daily sighting probability ~10% · With luck
Eastern Marsh-Harrier
LC

Eastern Marsh-Harrier

☀️ Diurnal Bird

Circus spilonotus

Daily sighting probability <5% · Rare
Western Marsh-Harrier
LC

Western Marsh-Harrier

☀️ Diurnal Bird

Circus aeruginosus

Daily sighting probability Insufficient data
Crested Serpent Eagle
LC Endemic

Crested Serpent Eagle

🌅 Crepuscular Bird

Spilornis cheela

Daily sighting probability ~30% · Possible
Crested Hawk-Eagle
LC Endemic

Crested Hawk-Eagle

🌅 Crepuscular Bird

Nisaetus cirrhatus

Daily sighting probability ~10% · With luck
Oriental Honey-buzzard
LC

Oriental Honey-buzzard

🌅 Crepuscular Bird

Pernis ptilorhynchus

Daily sighting probability ~10% · With luck
Indian Spotted Eagle

Indian Spotted Eagle

🌅 Crepuscular Bird

Aquila hastata

Daily sighting probability Insufficient data
Black-winged Kite
LC

Black-winged Kite

☀️ Diurnal Bird

Elanus caeruleus

Daily sighting probability ~10% · With luck
Jerdon's Baza
LC

Jerdon's Baza

☀️ Diurnal Bird

Aviceda jerdoni

Daily sighting probability <5% · Rare
Himalayan Vulture
NT

Himalayan Vulture

🌅 Crepuscular Bird

Gyps himalayensis

Daily sighting probability <5% · Rare
Short-toed Eagle
LC

Short-toed Eagle

☀️ Diurnal Bird

Circaetus gallicus

Daily sighting probability <5% · Rare
Rufous-bellied Eagle
NT

Rufous-bellied Eagle

☀️ Diurnal Bird

Lophotriorchis kienerii

Daily sighting probability <5% · Rare

Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

# Park Country Daily sighting probability
1 Wood Buffalo National Park 🇨🇦 Canada
~20%
2 Wrangell-St. Elias National Park 🇺🇸 United States
~20%
3 Katmai National Park 🇺🇸 United States
~20%
4 Gates of the Arctic National Park 🇺🇸 United States
~20%
5 Everglades National Park 🇺🇸 United States
~20%
6 Kiskunság National Park 🇭🇺 Hungary
~20%
7 Death Valley National Park 🇺🇸 United States
~20%
8 Hortobágy National Park 🇭🇺 Hungary
~20%
9 Point Pelee National Park 🇨🇦 Canada
~20%
10 Kluane National Park 🇨🇦 Canada
~10%
11 Fertő-Hanság National Park 🇭🇺 Hungary
~10%
12 Badlands National Park 🇺🇸 United States
~10%
13 Wadden Sea National Park 🇩🇪 Germany
~10%
14 El Vizcaíno Biosphere Reserve 🇲🇽 Mexico
~10%
15 Channel Islands National Park 🇺🇸 United States
~10%
16 Ciénaga de Zapata 🇨🇺 Cuba
~10%
17 Grand Teton National Park 🇺🇸 United States
~10%
18 Yellowstone National Park 🇺🇸 United States
~10%
19 Denali National Park 🇺🇸 United States
~10%
20 Gros Morne National Park 🇨🇦 Canada
~10%
21 Biebrza National Park 🇵🇱 Poland
~10%
22 Palo Verde National Park 🇨🇷 Costa Rica
~10%
23 Manas National Park 🇮🇳 India
~10%
24 Big Cypress National Preserve 🇺🇸 United States
~10%
25 Kaziranga National Park 🇮🇳 India
~10%
26 Cape Breton Highlands National Park 🇨🇦 Canada
~10%
27 Doñana National Park 🇪🇸 Spain
~10%
28 Riding Mountain National Park 🇨🇦 Canada
~10%
29 Jasper National Park 🇨🇦 Canada
~10%
30 Redwood National Park 🇺🇸 United States
<5%
31 Olympic National Park 🇺🇸 United States
<5%
32 Camargue 🇫🇷 France
<5%
33 Glacier National Park 🇺🇸 United States
<5%
34 Elk Island National Park 🇨🇦 Canada
<5%
35 Great Smoky Mountains National Park 🇺🇸 United States
<5%
36 Chitwan National Park 🇳🇵 Nepal
<5%
37 Saguaro National Park 🇺🇸 United States
<5%
38 Namdapha National Park 🇮🇳 India
<5%
39 Acadia National Park 🇺🇸 United States
<5%
40 Great Bear Rainforest 🇨🇦 Canada
<5%
41 Sequoia and Kings Canyon National Parks 🇺🇸 United States
<5%
42 Jaragua National Park 🇩🇴 Dominican Republic
<5%
43 Banff National Park 🇨🇦 Canada
<5%
44 Guadalupe Mountains National Park 🇺🇸 United States
<5%
45 Isle Royale National Park 🇺🇸 United States
<5%
46 Pyrénées National Park 🇫🇷 France
<5%
47 Ría Lagartos Biosphere Reserve 🇲🇽 Mexico
<5%
48 Białowieża National Park 🇵🇱 Poland
<5%
49 Cévennes National Park 🇫🇷 France
<5%
50 Big Bend National Park 🇺🇸 United States
<5%
51 Grand Canyon National Park 🇺🇸 United States
<5%
52 Langtang National Park 🇳🇵 Nepal
<5%
53 Cairngorms National Park 🇬🇧 United Kingdom
<5%
54 Royal Manas National Park 🇧🇹 Bhutan
<5%
55 Monfragüe National Park 🇪🇸 Spain
<5%
56 Montes Azules Biosphere Reserve 🇲🇽 Mexico
<5%
57 Pacific Rim National Park Reserve 🇨🇦 Canada
<5%
58 Zion National Park 🇺🇸 United States
<5%
59 Shenandoah National Park 🇺🇸 United States
<5%
60 Rocky Mountain National Park 🇺🇸 United States
<5%
61 Jim Corbett National Park 🇮🇳 India
<5%
62 Celestún Biosphere Reserve 🇲🇽 Mexico
<5%
63 Arrecifes de Cozumel National Park 🇲🇽 Mexico
<5%
64 Congaree National Park 🇺🇸 United States
<5%
65 Parque Natural Metropolitano 🇵🇦 Panama
<5%
66 Joshua Tree National Park 🇺🇸 United States
<5%
67 Manuel Antonio National Park 🇨🇷 Costa Rica
<5%
68 Bavarian Forest National Park 🇩🇪 Germany
<5%
69 Snowdonia National Park 🇬🇧 United Kingdom
<5%
70 Sierra de Guadarrama National Park 🇪🇸 Spain
<5%
71 Soberanía National Park 🇵🇦 Panama
<5%
72 La Amistad International Park (Panama) 🇵🇦 Panama
<5%
73 Tatra National Park 🇸🇰 Slovakia
Insufficient data
74 Keoladeo National Park 🇮🇳 India
Insufficient data
75 Nahanni National Park 🇨🇦 Canada
Insufficient data
76 Ranthambore National Park 🇮🇳 India
Insufficient data
77 Mercantour National Park 🇫🇷 France
Insufficient data
78 Ecrins National Park 🇫🇷 France
Insufficient data
79 Bahía de Loreto National Park 🇲🇽 Mexico
Insufficient data
80 Voyageurs National Park 🇺🇸 United States
Insufficient data
81 Cabo Pulmo National Park 🇲🇽 Mexico
Insufficient data
82 Nikko National Park 🇯🇵 Japan
Insufficient data
83 Royal Bardia National Park 🇳🇵 Nepal
Insufficient data
84 Reserva de la Biosfera Mariposa Monarca 🇲🇽 Mexico
Insufficient data
85 Khangchendzonga National Park 🇮🇳 India
Insufficient data
86 Gauja National Park 🇱🇻 Latvia
Insufficient data
87 Gobi Gurvansaikhan National Park 🇲🇳 Mongolia
Insufficient data
88 Triglav National Park 🇸🇮 Slovenia
Insufficient data
89 Gandoca-Manzanillo Wildlife Refuge 🇨🇷 Costa Rica
Insufficient data
90 Sian Ka'an Biosphere Reserve 🇲🇽 Mexico
Insufficient data
91 Aigüestortes National Park 🇪🇸 Spain
Insufficient data
92 Taroko National Park 🇹🇼 Taiwan
Insufficient data
93 Bastimentos Island National Marine Park 🇵🇦 Panama
Insufficient data
94 Vatnajokull National Park 🇮🇸 Iceland
Insufficient data
95 Las Baulas Marine National Park 🇨🇷 Costa Rica
Insufficient data
96 Yosemite National Park 🇺🇸 United States
Insufficient data
97 Picos de Europa National Park 🇪🇸 Spain
Insufficient data
98 Chagres National Park 🇵🇦 Panama
Insufficient data
99 Volcán Barú National Park 🇵🇦 Panama
Insufficient data
100 Darién National Park 🇵🇦 Panama
Insufficient data
101 Braulio Carrillo National Park 🇨🇷 Costa Rica
Insufficient data
102 Sierra Nevada National Park 🇪🇸 Spain
Insufficient data
103 Tortuguero National Park 🇨🇷 Costa Rica
Insufficient data
104 Tapantí-Macizo de la Muerte National Park 🇨🇷 Costa Rica
Insufficient data

Quick answers

What are the chances of seeing a Hen Harrier in Manas National Park?

About 10% of wildlife watchers report a Hen Harrier sighting in Manas National Park, based on 193 verified sightings from GBIF citizen-science data.

When is the best time to see Hen Harrier in Manas National Park?

January has the highest sighting rate for Hen Harrier in Manas National Park in our monthly data.

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