Montagu's Harrier
Montagu's HarrierMontagu's HarrierMontagu's HarrierMontagu's Harrier

Montagu's Harrier

Circus pygargus

Silhouette: Andy Wilson · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~20% · Possible
at Biebrza National Park
391 Verified sightings at Biebrza National Park From 2019 to 2026
3,636 Verified sightings across all 48 parks From 2019 to 2026
May Best month highest sighting rate
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Montagu's Harrier

Montagu's harrier (Circus pygargus) is a species of harrier, a bird of prey in the family Accipitridae. It breeds in large open areas in the Palearctic and is migratory, wintering in Africa, the Indian subcontinent and parts of the Arabian Peninsula. Its common name commemorates the British naturalist George Montagu.

The first formal description of Montagu's harrier was by the Swedish naturalist Carl Linnaeus in 1758, in the tenth edition of his Systema Naturae, under the binomial name Falco pygargus. The genus Circus was introduced by the French naturalist Bernard Germain de Lacépède in 1799. The genus name is derived from Ancient Greek. Circus is from kirkos, meaning "circle", referring to a bird of prey named for its circling flight (probably the hen harrier), and pygargus is Modern Latin derived from the Greek pugargos, from puge, meaning "rump", and argos, meaning "shining white". The species name was formerly used for the hen harrier before Montagu's was identified as a different species.

Sexual dimorphism is particularly apparent in the plumage of this species. Adult males are characterized by their overall pale grey plumage... Wikipedia →

Closest Relatives at Biebrza National Park

Western Marsh-Harrier
LC

Western Marsh-Harrier

☀️ Diurnal Bird

Circus aeruginosus

Daily sighting probability ~50% · Likely
Hen Harrier
LC

Hen Harrier

☀️ Diurnal Bird

Circus cyaneus

Daily sighting probability ~10% · With luck
Pale Harrier
NT

Pale Harrier

☀️ Diurnal Bird

Circus macrourus

Daily sighting probability <5% · Rare
Common Buzzard
LC

Common Buzzard

☀️ Diurnal Bird

Buteo buteo

Daily sighting probability ~50% · Likely
White-tailed Eagle
LC

White-tailed Eagle

☀️ Diurnal Bird

Haliaeetus albicilla

Daily sighting probability ~40% · Likely
Eurasian Sparrowhawk
LC

Eurasian Sparrowhawk

☀️ Diurnal Bird

Accipiter nisus

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

Lesser Spotted Eagle

☀️ Diurnal Bird

Aquila pomarina

Daily sighting probability ~10% · With luck
Rough-legged Hawk
LC

Rough-legged Hawk

☀️ Diurnal Bird

Buteo lagopus

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

European Honey-buzzard

☀️ Diurnal Bird

Pernis apivorus

Daily sighting probability <5% · Rare
Red Kite
LC

Red Kite

☀️ Diurnal Bird

Milvus milvus

Daily sighting probability <5% · Rare
Black Kite
LC

Black Kite

☀️ Diurnal Bird

Milvus migrans

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

Short-toed Eagle

☀️ Diurnal Bird

Circaetus gallicus

Daily sighting probability <5% · Rare

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Biebrza National Park 🇵🇱 Poland
~20%
2 Fertő-Hanság National Park 🇭🇺 Hungary
~20%
3 Kidepo Valley National Park 🇺🇬 Uganda
~10%
4 Serengeti National Park 🇹🇿 Tanzania
~10%
5 Kiskunság National Park 🇭🇺 Hungary
~10%
6 Masai Mara National Reserve 🇰🇪 Kenya
~10%
7 Cévennes National Park 🇫🇷 France
~10%
8 Murchison Falls National Park 🇺🇬 Uganda
~10%
9 Ngorongoro Conservation Area 🇹🇿 Tanzania
~10%
10 Camargue 🇫🇷 France
~10%
11 Hortobágy National Park 🇭🇺 Hungary
~10%
12 Tsavo East National Park 🇰🇪 Kenya
<5%
13 Doñana National Park 🇪🇸 Spain
<5%
14 Samburu National Reserve 🇰🇪 Kenya
<5%
15 Amboseli National Park 🇰🇪 Kenya
<5%
16 Białowieża National Park 🇵🇱 Poland
<5%
17 Monfragüe National Park 🇪🇸 Spain
<5%
18 Lake Nakuru National Park 🇰🇪 Kenya
<5%
19 Queen Elizabeth National Park 🇺🇬 Uganda
<5%
20 Pyrénées National Park 🇫🇷 France
<5%
21 Wadden Sea National Park 🇩🇪 Germany
<5%
22 Tarangire National Park 🇹🇿 Tanzania
<5%
23 Tsavo West National Park 🇰🇪 Kenya
<5%
24 Kruger National Park 🇿🇦 South Africa
<5%
25 Lake Mburo National Park 🇺🇬 Uganda
<5%
26 Sierra de Guadarrama National Park 🇪🇸 Spain
<5%
27 Keoladeo National Park 🇮🇳 India
<5%
28 Nairobi National Park 🇰🇪 Kenya
<5%
29 Sierra Nevada National Park 🇪🇸 Spain
<5%
30 Bavarian Forest National Park 🇩🇪 Germany
<5%
31 Chobe National Park 🇧🇼 Botswana
<5%
32 Kanha National Park 🇮🇳 India
<5%
33 Mikumi National Park 🇹🇿 Tanzania
Insufficient data
34 Ecrins National Park 🇫🇷 France
Insufficient data
35 Mercantour National Park 🇫🇷 France
Insufficient data
36 Meru National Park 🇰🇪 Kenya
Insufficient data
37 Bale Mountains National Park 🇪🇹 Ethiopia
Insufficient data
38 Ruaha National Park 🇹🇿 Tanzania
Insufficient data
39 Aberdare National Park 🇰🇪 Kenya
Insufficient data
40 Plitvice Lakes National Park 🇭🇷 Croatia
Insufficient data
41 Arusha National Park 🇹🇿 Tanzania
Insufficient data
42 Lake Manyara National Park 🇹🇿 Tanzania
Insufficient data
43 Pilanesberg National Park 🇿🇦 South Africa
Insufficient data
44 Moremi Game Reserve 🇧🇼 Botswana
Insufficient data
45 Bandhavgarh National Park 🇮🇳 India
Insufficient data
46 Ranthambore National Park 🇮🇳 India
Insufficient data
47 Kibale National Park 🇺🇬 Uganda
Insufficient data
48 Virunga National Park 🇨🇩 Democratic Republic of the Congo
Insufficient data

Quick answers

What are the chances of seeing a Montagu's Harrier in Biebrza National Park?

About 20% of wildlife watchers report a Montagu's Harrier sighting in Biebrza National Park, based on 391 verified sightings from GBIF citizen-science data.

When is the best time to see Montagu's Harrier in Biebrza National Park?

May has the highest sighting rate for Montagu's Harrier in Biebrza National Park in our monthly data.

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