Red-breasted Merganser

Mergus serrator

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered

KingdomAnimalia (Animals)
PhylumChordata (Cordats)
ClassAves (Aus)
OrderAnseriformes
FamilyAnatidae (Anàtids)
GenusMergus (Typical Mergansers)
SpeciesMergus serrator (Red-breasted Merganser)

Insufficient data

overall probability at Nahanni National Park

3 Verified records at Nahanni National Park

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

The red-breasted merganser (Mergus serrator) is a duck species that is native to much of the temperate to subarctic Northern Hemisphere. The red breast that gives the species its common name is only displayed by males in breeding plumage. Individuals fly rapidly, and feed by diving from the surface to pursue aquatic animals underwater, using serrated bills to capture slippery fish. They migrate each year from breeding sites on lakes and rivers to their mostly coastal wintering areas, making them the most frequent species in the genus Mergus to frequent saltwater regularly. The worldwide population of this species is stable, though it is threatened in some areas by habitat loss and other factors. Wikipedia →

Closest Relatives at Nahanni National Park

Bucephala islandica

Anas crecca

Aythya affinis

Mareca americana

Anas platyrhynchos

Cygnus buccinator

Aythya collaris

Bucephala albeola

Clangula hyemalis

Anas acuta

Bucephala clangula

Histrionicus histrionicus

Insufficient data

See all 12 relatives Show fewer

📅 Monthly Probability

📊

Fewer than 5 records of Red-breasted Merganser at Nahanni National Park — 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	Thingvellir National Park	🇮🇸 Iceland	60–70%
2	Vatnajokull National Park	🇮🇸 Iceland	50–60%
3	Point Pelee National Park	🇨🇦 Canada	40–50%
4	Isle Royale National Park	🇺🇸 United States	30–40%
5	Katmai National Park	🇺🇸 United States	20–30%
6	El Vizcaíno Biosphere Reserve	🇲🇽 Mexico	10–20%
7	Acadia National Park	🇺🇸 United States	10–20%
8	Pacific Rim National Park Reserve	🇨🇦 Canada	10–20%
9	Gates of the Arctic National Park	🇺🇸 United States	10–20%
10	Great Bear Rainforest	🇨🇦 Canada	10–20%
11	Cape Breton Highlands National Park	🇨🇦 Canada	10–20%
12	Channel Islands National Park	🇺🇸 United States	10–20%
13	Snowdonia National Park	🇬🇧 United Kingdom	10–20%
14	Olympic National Park	🇺🇸 United States	5–10%
15	Kluane National Park	🇨🇦 Canada	5–10%
16	Wadden Sea National Park	🇩🇪 Germany	5–10%
17	Gros Morne National Park	🇨🇦 Canada	5–10%
18	Wrangell-St. Elias National Park	🇺🇸 United States	5–10%
19	Kenai Fjords National Park	🇺🇸 United States	5–10%
20	Voyageurs National Park	🇺🇸 United States	<5%
21	Ría Lagartos Biosphere Reserve	🇲🇽 Mexico	<5%
22	Redwood National Park	🇺🇸 United States	<5%
23	Cairngorms National Park	🇬🇧 United Kingdom	<5%
24	Death Valley National Park	🇺🇸 United States	<5%
25	Everglades National Park	🇺🇸 United States	<5%
26	Ciénaga de Zapata	🇨🇺 Cuba	<5%
27	Banff National Park	🇨🇦 Canada	<5%
28	Kiskunság National Park	🇭🇺 Hungary	<5%
29	Celestún Biosphere Reserve	🇲🇽 Mexico	<5%
30	Bavarian Forest National Park	🇩🇪 Germany	<5%
31	Jasper National Park	🇨🇦 Canada	<5%
32	Shenandoah National Park	🇺🇸 United States	<5%
33	Yellowstone National Park	🇺🇸 United States	<5%
34	Big Cypress National Preserve	🇺🇸 United States	<5%
35	Biebrza National Park	🇵🇱 Poland	<5%
36	Denali National Park	🇺🇸 United States	<5%
37	Grand Teton National Park	🇺🇸 United States	<5%
38	Rocky Mountain National Park	🇺🇸 United States	<5%
39	Glacier National Park	🇺🇸 United States	<5%
40	Joshua Tree National Park	🇺🇸 United States	<5%
41	Nahanni National Park	🇨🇦 Canada	Insufficient data
42	La Amistad International Park (Panama)	🇵🇦 Panama	Insufficient data
43	Elk Island National Park	🇨🇦 Canada	Insufficient data
44	Nikko National Park	🇯🇵 Japan	Insufficient data
45	Bahía de Loreto National Park	🇲🇽 Mexico	Insufficient data
46	Riding Mountain National Park	🇨🇦 Canada	Insufficient data
47	Hortobágy National Park	🇭🇺 Hungary	Insufficient data
48	Arrecifes de Cozumel National Park	🇲🇽 Mexico	Insufficient data
49	Zion National Park	🇺🇸 United States	Insufficient data
50	Białowieża National Park	🇵🇱 Poland	Insufficient data
51	Fertő-Hanság National Park	🇭🇺 Hungary	Insufficient data
52	Grand Canyon National Park	🇺🇸 United States	Insufficient data
53	Sian Ka'an Biosphere Reserve	🇲🇽 Mexico	Insufficient data
54	Great Smoky Mountains National Park	🇺🇸 United States	Insufficient data

← Back to Nahanni National Park

Red-breasted Merganser

Closest Relatives at Nahanni National Park

Barrow's Goldeneye

Common Teal

Lesser Scaup

American Wigeon

Mallard

Trumpeter Swan

Ring-necked Duck

Bufflehead

Long-tailed Duck

Northern Pintail

Common Goldeneye

Harlequin Duck

📅 Monthly Probability

☀️ When They're Spotted

Global Distribution

Parks Where Found