Western Marsh-Harrier

Circus aeruginosus

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered

KingdomAnimalia (Animals)
PhylumChordata (Cordats)
ClassAves (Aus)
OrderAccipitriformes
FamilyAccipitridae (Accipítrids)
GenusCircus (Harriers)
SpeciesCircus aeruginosus (Western Marsh-Harrier)

Insufficient data

overall probability at Samburu National Reserve

3 Verified records at Samburu National Reserve

☀️ Diurnal When it's active during daytime hours (6am–6pm)

The western marsh harrier (Circus aeruginosus) is a large harrier, a bird of prey from temperate and subtropical western Eurasia and adjacent Africa. It is also known as the Eurasian marsh harrier. Formerly, a number of relatives were included in C. aeruginosus, which was then known as "marsh harrier". The related taxa are now generally considered to be separate species: the eastern marsh harrier (C. spilonotus), the Papuan harrier (C. spilothorax) of eastern Asia and the Wallacea, the swamp harrier (C. approximans) of Australasia and the Madagascar marsh harrier (C. maillardi) of the western Indian Ocean islands. The western marsh harrier is often divided into two subspecies, the widely migratory C. a. aeruginosus which is found across most of its range, and C. a. Wikipedia →

Closest Relatives at Samburu National Reserve

Circus macrourus

<5% · Rare

Circus pygargus

<5% · Rare

Aquila rapax

50–60% · Likely

Terathopius ecaudatus

Melierax poliopterus

Elanus caeruleus

Gyps africanus

Polemaetus bellicosus

Haliaeetus vocifer

Micronisus gabar

Necrosyrtes monachus

Aquila spilogaster

See all 12 relatives Show fewer

📅 Monthly Probability

📊

Fewer than 5 records of Western Marsh-Harrier at Samburu National Reserve — not enough to chart months honestly.

☀️ When They're Spotted

Most active during daytime hours (6am–6pm) · across all parks (global)

☀️Diurnal

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	Probability
1	Hortobágy National Park	🇭🇺 Hungary	70–80%
2	Fertő-Hanság National Park	🇭🇺 Hungary	70–80%
3	Kiskunság National Park	🇭🇺 Hungary	60–70%
4	Biebrza National Park	🇵🇱 Poland	40–50%
5	Keoladeo National Park	🇮🇳 India	40–50%
6	Doñana National Park	🇪🇸 Spain	40–50%
7	Białowieża National Park	🇵🇱 Poland	30–40%
8	Wadden Sea National Park	🇩🇪 Germany	20–30%
9	Monfragüe National Park	🇪🇸 Spain	20–30%
10	Sierra Nevada National Park	🇪🇸 Spain	10–20%
11	Bavarian Forest National Park	🇩🇪 Germany	5–10%
12	Pyrénées National Park	🇫🇷 France	5–10%
13	Niokolo-Koba National Park	🇸🇳 Senegal	5–10%
14	Murchison Falls National Park	🇺🇬 Uganda	5–10%
15	Ngorongoro Conservation Area	🇹🇿 Tanzania	5–10%
16	Amboseli National Park	🇰🇪 Kenya	<5%
17	Gauja National Park	🇱🇻 Latvia	<5%
18	Queen Elizabeth National Park	🇺🇬 Uganda	<5%
19	Lake Mburo National Park	🇺🇬 Uganda	<5%
20	Nairobi National Park	🇰🇪 Kenya	<5%
21	Akagera National Park	🇷🇼 Rwanda	<5%
22	Cairngorms National Park	🇬🇧 United Kingdom	<5%
23	Lake Nakuru National Park	🇰🇪 Kenya	<5%
24	Arusha National Park	🇹🇿 Tanzania	<5%
25	Masai Mara National Reserve	🇰🇪 Kenya	<5%
26	Serengeti National Park	🇹🇿 Tanzania	<5%
27	Sierra de Guadarrama National Park	🇪🇸 Spain	<5%
28	Aberdare National Park	🇰🇪 Kenya	<5%
29	Tsavo West National Park	🇰🇪 Kenya	<5%
30	Snowdonia National Park	🇬🇧 United Kingdom	<5%
31	Cévennes National Park	🇫🇷 France	<5%
32	Tarangire National Park	🇹🇿 Tanzania	<5%
33	Tsavo East National Park	🇰🇪 Kenya	<5%
34	Mercantour National Park	🇫🇷 France	<5%
35	Ranthambore National Park	🇮🇳 India	<5%
36	Tatra National Park	🇸🇰 Slovakia	<5%
37	Aigüestortes National Park	🇪🇸 Spain	<5%
38	Nagarhole National Park	🇮🇳 India	<5%
39	Virunga National Park	🇨🇩 Democratic Republic of the Congo	<5%
40	Chitwan National Park	🇳🇵 Nepal	<5%
41	Kibale National Park	🇺🇬 Uganda	<5%
42	Periyar National Park	🇮🇳 India	Insufficient data
43	Table Mountain National Park	🇿🇦 South Africa	Insufficient data
44	Bandipur National Park	🇮🇳 India	Insufficient data
45	Awash National Park	🇪🇹 Ethiopia	Insufficient data
46	Meru National Park	🇰🇪 Kenya	Insufficient data
47	Kidepo Valley National Park	🇺🇬 Uganda	Insufficient data
48	Bale Mountains National Park	🇪🇹 Ethiopia	Insufficient data
49	Volcanoes National Park	🇷🇼 Rwanda	Insufficient data
50	Minneriya National Park	🇱🇰 Sri Lanka	Insufficient data
51	Triglav National Park	🇸🇮 Slovenia	Insufficient data
52	Satpura National Park	🇮🇳 India	Insufficient data
53	Samburu National Reserve	🇰🇪 Kenya	Insufficient data
54	Ordesa y Monte Perdido National Park	🇪🇸 Spain	Insufficient data
55	Bandhavgarh National Park	🇮🇳 India	Insufficient data
56	Chobe National Park	🇧🇼 Botswana	Insufficient data
57	Horton Plains National Park	🇱🇰 Sri Lanka	Insufficient data
58	Bwindi Impenetrable National Park	🇺🇬 Uganda	Insufficient data
59	Yala National Park	🇱🇰 Sri Lanka	Insufficient data
60	Hwange National Park	🇿🇼 Zimbabwe	Insufficient data
61	Picos de Europa National Park	🇪🇸 Spain	Insufficient data
62	Hemis National Park	🇮🇳 India	Insufficient data
63	Gobi Gurvansaikhan National Park	🇲🇳 Mongolia	Insufficient data
64	Kanha National Park	🇮🇳 India	Insufficient data
65	Kaziranga National Park	🇮🇳 India	Insufficient data

← Back to Samburu National Reserve

Western Marsh-Harrier

Closest Relatives at Samburu National Reserve

Pale Harrier

Montagu's Harrier

Tawny Eagle

Bateleur

Eastern Chanting-Goshawk

Black-winged Kite

White-backed Vulture

Martial Eagle

African Fish-Eagle

Gabar Goshawk

Hooded Vulture

African Hawk-Eagle

📅 Monthly Probability

☀️ When They're Spotted

Global Distribution

Parks Where Found