Red-breasted Merganser

Red-breasted Merganser

Mergus serrator

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
60–70% · Likely
overall probability at Thingvellir National Park

📅 Monthly Probability

60–70
Jan
60–70
Feb
60–70
Mar
50–60
Apr
60–70
May
60–70
Jun
40–50
Jul
40–50
Aug
60–70
Sep
60–70
Oct
60–70
Nov
60–70
Dec

☀️ When They're Spotted

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

☀️Diurnal
☀️🌙🌙12am6am12pm6pm12am

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
0–10%
15 Kluane National Park 🇨🇦 Canada
0–10%
16 Wadden Sea National Park 🇩🇪 Germany
0–10%
17 Gros Morne National Park 🇨🇦 Canada
0–10%
18 Wrangell-St. Elias National Park 🇺🇸 United States
0–10%
19 Kenai Fjords National Park 🇺🇸 United States
0–10%
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 Biebrza National Park 🇵🇱 Poland
<5%
35 Denali National Park 🇺🇸 United States
<5%
36 Grand Teton National Park 🇺🇸 United States
<5%
37 Rocky Mountain National Park 🇺🇸 United States
<5%
38 Glacier National Park 🇺🇸 United States
<5%
39 Joshua Tree National Park 🇺🇸 United States
<5%
40 Nahanni National Park 🇨🇦 Canada
Insufficient data
41 La Amistad International Park (Panama) 🇵🇦 Panama
Insufficient data
42 Elk Island National Park 🇨🇦 Canada
Insufficient data
43 Nikko National Park 🇯🇵 Japan
Insufficient data
44 Bahía de Loreto National Park 🇲🇽 Mexico
Insufficient data
45 Hortobágy National Park 🇭🇺 Hungary
Insufficient data
46 Riding Mountain National Park 🇨🇦 Canada
Insufficient data
47 Arrecifes de Cozumel National Park 🇲🇽 Mexico
Insufficient data
48 Zion National Park 🇺🇸 United States
Insufficient data
49 Fertő-Hanság National Park 🇭🇺 Hungary
Insufficient data
50 Białowieża National Park 🇵🇱 Poland
Insufficient data
51 Grand Canyon National Park 🇺🇸 United States
Insufficient data
52 Sian Ka'an Biosphere Reserve 🇲🇽 Mexico
Insufficient data
53 Great Smoky Mountains National Park 🇺🇸 United States
Insufficient data

Quick answers

What are the chances of seeing a Red-breasted Merganser in Thingvellir National Park?

About 60% of visitor-days record a Red-breasted Merganser sighting in Thingvellir National Park, based on 142 observer-days of citizen-science data from GBIF.

When is the best time to see Red-breasted Merganser in Thingvellir National Park?

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

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