Common Merganser

Common Merganser

Mergus merganser

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

📅 Monthly Probability

60–70
Jan
60–70
Feb
70–80
Mar
60–70
Apr
50–60
May
60–70
Jun
70–80
Jul
50–60
Aug
80–90
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 Katmai National Park 🇺🇸 United States
60–70%
2 Isle Royale National Park 🇺🇸 United States
50–60%
3 Grand Teton National Park 🇺🇸 United States
40–50%
4 Yellowstone National Park 🇺🇸 United States
30–40%
5 Pacific Rim National Park Reserve 🇨🇦 Canada
20–30%
6 Great Bear Rainforest 🇨🇦 Canada
20–30%
7 Glacier National Park 🇺🇸 United States
10–20%
8 Bavarian Forest National Park 🇩🇪 Germany
10–20%
9 Voyageurs National Park 🇺🇸 United States
10–20%
10 Banff National Park 🇨🇦 Canada
10–20%
11 Redwood National Park 🇺🇸 United States
10–20%
12 Cairngorms National Park 🇬🇧 United Kingdom
10–20%
13 Chitwan National Park 🇳🇵 Nepal
10–20%
14 Jasper National Park 🇨🇦 Canada
10–20%
15 Riding Mountain National Park 🇨🇦 Canada
10–20%
16 Wood Buffalo National Park 🇨🇦 Canada
10–20%
17 Kenai Fjords National Park 🇺🇸 United States
10–20%
18 Snowdonia National Park 🇬🇧 United Kingdom
10–20%
19 Gros Morne National Park 🇨🇦 Canada
10–20%
20 Cape Breton Highlands National Park 🇨🇦 Canada
10–20%
21 Wrangell-St. Elias National Park 🇺🇸 United States
10–20%
22 Yosemite National Park 🇺🇸 United States
10–20%
23 Olympic National Park 🇺🇸 United States
10–20%
24 Zion National Park 🇺🇸 United States
10–20%
25 Thingvellir National Park 🇮🇸 Iceland
10–20%
26 Biebrza National Park 🇵🇱 Poland
0–10%
27 Vatnajokull National Park 🇮🇸 Iceland
0–10%
28 Triglav National Park 🇸🇮 Slovenia
0–10%
29 Acadia National Park 🇺🇸 United States
0–10%
30 Nikko National Park 🇯🇵 Japan
0–10%
31 Gauja National Park 🇱🇻 Latvia
0–10%
32 Kluane National Park 🇨🇦 Canada
0–10%
33 Rocky Mountain National Park 🇺🇸 United States
0–10%
34 Point Pelee National Park 🇨🇦 Canada
0–10%
35 Shenandoah National Park 🇺🇸 United States
<5%
36 Great Smoky Mountains National Park 🇺🇸 United States
<5%
37 Wadden Sea National Park 🇩🇪 Germany
<5%
38 Sequoia and Kings Canyon National Parks 🇺🇸 United States
<5%
39 Royal Bardia National Park 🇳🇵 Nepal
<5%
40 Grand Canyon National Park 🇺🇸 United States
<5%
41 Białowieża National Park 🇵🇱 Poland
<5%
42 Elk Island National Park 🇨🇦 Canada
<5%
43 Fertő-Hanság National Park 🇭🇺 Hungary
<5%
44 Kiskunság National Park 🇭🇺 Hungary
<5%
45 Denali National Park 🇺🇸 United States
<5%
46 Namdapha National Park 🇮🇳 India
<5%
47 Channel Islands National Park 🇺🇸 United States
<5%
48 El Vizcaíno Biosphere Reserve 🇲🇽 Mexico
<5%
49 Joshua Tree National Park 🇺🇸 United States
<5%
50 Death Valley National Park 🇺🇸 United States
<5%
51 Jim Corbett National Park 🇮🇳 India
<5%
52 Gates of the Arctic National Park 🇺🇸 United States
Insufficient data
53 Khangchendzonga National Park 🇮🇳 India
Insufficient data
54 Jiuzhaigou National Park 🇨🇳 China
Insufficient data
55 Hortobágy National Park 🇭🇺 Hungary
Insufficient data
56 Tatra National Park 🇸🇰 Slovakia
Insufficient data
57 Celestún Biosphere Reserve 🇲🇽 Mexico
Insufficient data
58 Bandhavgarh National Park 🇮🇳 India
Insufficient data
59 Gobi Gurvansaikhan National Park 🇲🇳 Mongolia
Insufficient data
60 Kaziranga National Park 🇮🇳 India
Insufficient data
61 Big Bend National Park 🇺🇸 United States
Insufficient data
62 Pyrénées National Park 🇫🇷 France
Insufficient data

Quick answers

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

About 69% of visitor-days record a Common Merganser sighting in Katmai National Park, based on 115 observer-days of citizen-science data from GBIF.

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

September has the highest sighting rate for Common Merganser in Katmai National Park in our monthly data.

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