Common Merganser
Common MerganserCommon Merganser

Common Merganser

Mergus merganser

Silhouette: Andy Wilson · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~10% · With luck
at Thingvellir National Park
36 Verified sightings at Thingvellir National Park From 2019 to 2026
8,501 Verified sightings across all 46 parks From 2019 to 2026
June Best month highest sighting rate
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Common Merganser

The common merganser or goosander (Mergus merganser) is a large sea duck of rivers and lakes in forested areas of Europe, Asia, and North America. The common merganser eats mainly fish. It nests in holes in trees. The name "common merganser" is used in North America, while "goosander" is used in Eurasia.

The first formal description of the common merganser was written by Swedish naturalist Carl Linnaeus in 1758 in the 10th edition of his Systema Naturae. He introduced the current binomial name Mergus merganser. The genus name is a Latin word used by Pliny and other Roman authors to refer to an unspecified waterbird, and merganser is derived from mergus and anser, Latin for "goose". In 1843 John James Audubon used the name "Buff-breasted Merganser" in addition to "goosander" in his book The Birds of America.

The three subspecies differ in only minor detail: It is 58–72 cm (23–28+1⁄2 in) long with a 78–97 cm (30+1⁄2–38 in) wingspan and a weight of 0.9–2.1 kg (2 lb 0 oz – 4 lb 10 oz); males are on average slightly larger than females, but with some overlap. Like other species in the genus Mergus, it has a crest of longer head feathers, but these usually... Wikipedia →

Closest Relatives at Thingvellir National Park

Red-breasted Merganser
LC

Red-breasted Merganser

☀️ Diurnal Bird

Mergus serrator

Daily sighting probability ~60% · Likely
Greylag Goose
LC

Greylag Goose

☀️ Diurnal Bird

Anser anser

Daily sighting probability ~90% · Very likely
Mallard
LC

Mallard

☀️ Diurnal Bird

Anas platyrhynchos

Daily sighting probability ~60% · Likely
Harlequin Duck
LC

Harlequin Duck

☀️ Diurnal Bird

Histrionicus histrionicus

Daily sighting probability ~60% · Likely
Tufted Duck
LC

Tufted Duck

☀️ Diurnal Bird

Aythya fuligula

Daily sighting probability ~40% · Likely
Whooper Swan
LC

Whooper Swan

☀️ Diurnal Bird

Cygnus cygnus

Daily sighting probability ~30% · Possible
Common Teal
LC

Common Teal

☀️ Diurnal Bird

Anas crecca

Daily sighting probability ~10% · With luck
Canada Goose
LC

Canada Goose

☀️ Diurnal Bird

Branta canadensis

Daily sighting probability Insufficient data
Greater Scaup
LC

Greater Scaup

☀️ Diurnal Bird

Aythya marila

Daily sighting probability <5% · Rare
Long-tailed Duck
VU

Long-tailed Duck

☀️ Diurnal Bird

Clangula hyemalis

Daily sighting probability <5% · Rare
Pink-footed Goose
LC

Pink-footed Goose

☀️ Diurnal Bird

Anser brachyrhynchus

Daily sighting probability <5% · Rare
Common Eider
NT

Common Eider

☀️ Diurnal Bird

Somateria mollissima

Daily sighting probability Insufficient data

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Katmai National Park 🇺🇸 United States
~70%
2 Isle Royale National Park 🇺🇸 United States
~60%
3 Plitvice Lakes National Park 🇭🇷 Croatia
~40%
4 Bavarian Forest National Park 🇩🇪 Germany
~20%
5 Triglav National Park 🇸🇮 Slovenia
~20%
6 Cairngorms National Park 🇬🇧 United Kingdom
~10%
7 Chitwan National Park 🇳🇵 Nepal
~10%
8 Wood Buffalo National Park 🇨🇦 Canada
~10%
9 Kenai Fjords National Park 🇺🇸 United States
~10%
10 Snowdonia National Park 🇬🇧 United Kingdom
~10%
11 Gros Morne National Park 🇨🇦 Canada
~10%
12 Cape Breton Highlands National Park 🇨🇦 Canada
~10%
13 Wrangell-St. Elias National Park 🇺🇸 United States
~10%
14 Yosemite National Park 🇺🇸 United States
~10%
15 Thingvellir National Park 🇮🇸 Iceland
~10%
16 Biebrza National Park 🇵🇱 Poland
~10%
17 Vatnajokull National Park 🇮🇸 Iceland
~10%
18 Acadia National Park 🇺🇸 United States
~10%
19 Nikko National Park 🇯🇵 Japan
~10%
20 Gauja National Park 🇱🇻 Latvia
~10%
21 Point Pelee National Park 🇨🇦 Canada
<5%
22 Royal Manas National Park 🇧🇹 Bhutan
<5%
23 Shenandoah National Park 🇺🇸 United States
<5%
24 Wadden Sea National Park 🇩🇪 Germany
<5%
25 Manas National Park 🇮🇳 India
<5%
26 Royal Bardia National Park 🇳🇵 Nepal
<5%
27 Białowieża National Park 🇵🇱 Poland
<5%
28 Fertő-Hanság National Park 🇭🇺 Hungary
<5%
29 Kiskunság National Park 🇭🇺 Hungary
<5%
30 Saguaro National Park 🇺🇸 United States
<5%
31 Denali National Park 🇺🇸 United States
<5%
32 Namdapha National Park 🇮🇳 India
<5%
33 El Vizcaíno Biosphere Reserve 🇲🇽 Mexico
<5%
34 Joshua Tree National Park 🇺🇸 United States
<5%
35 Ecrins National Park 🇫🇷 France
Insufficient data
36 Khangchendzonga National Park 🇮🇳 India
Insufficient data
37 Jiuzhaigou National Park 🇨🇳 China
Insufficient data
38 Vanoise National Park 🇫🇷 France
Insufficient data
39 Hortobágy National Park 🇭🇺 Hungary
Insufficient data
40 Tatra National Park 🇸🇰 Slovakia
Insufficient data
41 Celestún Biosphere Reserve 🇲🇽 Mexico
Insufficient data
42 Jim Corbett National Park 🇮🇳 India
Insufficient data
43 Bandhavgarh National Park 🇮🇳 India
Insufficient data
44 Gobi Gurvansaikhan National Park 🇲🇳 Mongolia
Insufficient data
45 Kaziranga National Park 🇮🇳 India
Insufficient data
46 Pyrénées National Park 🇫🇷 France
Insufficient data

Quick answers

What are the chances of seeing a Common Merganser in Thingvellir National Park?

About 10% of wildlife watchers report a Common Merganser sighting in Thingvellir National Park, based on 36 verified sightings from GBIF citizen-science data.

When is the best time to see Common Merganser in Thingvellir National Park?

June has the highest sighting rate for Common Merganser in Thingvellir National Park in our monthly data.

← Back to Thingvellir National Park