Gadwall
GadwallGadwallGadwallGadwall

Gadwall

Mareca strepera

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~10% · With luck
at Saguaro National Park
4,911 Verified sightings at Saguaro National Park From 2019 to 2026
28,659 Verified sightings across all 76 parks From 2019 to 2026
December Best month highest sighting rate
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Gadwall

The gadwall (Mareca strepera) is a common and widespread dabbling duck in the family Anatidae. The gadwall was first described by Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae. DNA studies have shown that it is a sister species with the falcated duck; the two are closely related to the three species of wigeons, and all of them have been assigned to the genus Mareca. There are two subspecies:

Mareca strepera strepera (formerly Anas strepera strepera), the common gadwall, described by Linnaeus, is the nominate subspecies. †M. s. couesi (formerly A. s. couesi), Coues's gadwall, extinct c. 1874, was formerly found only on Teraina, a coral atoll in the Pacific Ocean.

The specific name strepera is Late Latin for "noisy". The etymology of the word gadwall is not known, but the name has been in use since 1666. The gadwall is 47–58 cm (19–23 in) long with a 78–85 cm (31–33 in) wingspan. The male is slightly larger than the female, weighing on average 990 g (35 oz) against her 850 g (30 oz). The breeding male is patterned grey, with a black rear end, light chestnut wings, and a brilliant white speculum, obvious in flight or at rest. In non... Wikipedia →

Closest Relatives at Saguaro National Park

American Wigeon
LC

American Wigeon

☀️ Diurnal Bird

Mareca americana

Daily sighting probability ~20% · Possible
Mallard
LC

Mallard

☀️ Diurnal Bird

Anas platyrhynchos

Daily sighting probability ~40% · Likely
Ring-necked Duck
LC

Ring-necked Duck

☀️ Diurnal Bird

Aythya collaris

Daily sighting probability ~20% · Possible
Northern Shoveler
LC

Northern Shoveler

☀️ Diurnal Bird

Spatula clypeata

Daily sighting probability ~20% · Possible
Ruddy Duck
LC

Ruddy Duck

☀️ Diurnal Bird

Oxyura jamaicensis

Daily sighting probability ~20% · Possible
Cinnamon Teal
LC

Cinnamon Teal

☀️ Diurnal Bird

Spatula cyanoptera

Daily sighting probability ~10% · With luck
Common Teal
LC

Common Teal

☀️ Diurnal Bird

Anas crecca

Daily sighting probability ~10% · With luck
Northern Pintail
LC

Northern Pintail

☀️ Diurnal Bird

Anas acuta

Daily sighting probability ~10% · With luck
Mexican Duck

Mexican Duck

☀️ Diurnal Bird

Anas diazi

Daily sighting probability ~10% · With luck
Blue-winged Teal
LC

Blue-winged Teal

☀️ Diurnal Bird

Spatula discors

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

Snow Goose

🌅 Crepuscular Bird

Anser caerulescens

Daily sighting probability ~10% · With luck
Redhead
LC

Redhead

☀️ Diurnal Bird

Aythya americana

Daily sighting probability ~10% · With luck

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 Daily sighting probability
1 Keoladeo National Park 🇮🇳 India
~50%
2 Elk Island National Park 🇨🇦 Canada
~50%
3 Hortobágy National Park 🇭🇺 Hungary
~50%
4 Fertő-Hanság National Park 🇭🇺 Hungary
~40%
5 Channel Islands National Park 🇺🇸 United States
~30%
6 Wadden Sea National Park 🇩🇪 Germany
~30%
7 Kaziranga National Park 🇮🇳 India
~30%
8 Vatnajokull National Park 🇮🇸 Iceland
~30%
9 Kiskunság National Park 🇭🇺 Hungary
~20%
10 Białowieża National Park 🇵🇱 Poland
~20%
11 Biebrza National Park 🇵🇱 Poland
~20%
12 Doñana National Park 🇪🇸 Spain
~20%
13 Bavarian Forest National Park 🇩🇪 Germany
~20%
14 Sierra de Guadarrama National Park 🇪🇸 Spain
~20%
15 Death Valley National Park 🇺🇸 United States
~20%
16 Snowdonia National Park 🇬🇧 United Kingdom
~20%
17 Yellowstone National Park 🇺🇸 United States
~10%
18 Kanha National Park 🇮🇳 India
~10%
19 Camargue 🇫🇷 France
~10%
20 Saguaro National Park 🇺🇸 United States
~10%
21 Grand Teton National Park 🇺🇸 United States
~10%
22 Chitwan National Park 🇳🇵 Nepal
~10%
23 Badlands National Park 🇺🇸 United States
~10%
24 Monfragüe National Park 🇪🇸 Spain
~10%
25 Glacier National Park 🇺🇸 United States
~10%
26 Riding Mountain National Park 🇨🇦 Canada
~10%
27 Point Pelee National Park 🇨🇦 Canada
<5%
28 Jasper National Park 🇨🇦 Canada
<5%
29 Rocky Mountain National Park 🇺🇸 United States
<5%
30 Big Bend National Park 🇺🇸 United States
<5%
31 Sundarbans National Park 🇮🇳 India
<5%
32 Sequoia and Kings Canyon National Parks 🇺🇸 United States
<5%
33 Kenai Fjords National Park 🇺🇸 United States
<5%
34 Shenandoah National Park 🇺🇸 United States
<5%
35 Wrangell-St. Elias National Park 🇺🇸 United States
<5%
36 Bahía de Loreto National Park 🇲🇽 Mexico
<5%
37 Royal Bardia National Park 🇳🇵 Nepal
<5%
38 Olympic National Park 🇺🇸 United States
<5%
39 Joshua Tree National Park 🇺🇸 United States
<5%
40 Gobi Gurvansaikhan National Park 🇲🇳 Mongolia
<5%
41 Great Bear Rainforest 🇨🇦 Canada
<5%
42 Banff National Park 🇨🇦 Canada
<5%
43 Kluane National Park 🇨🇦 Canada
<5%
44 El Vizcaíno Biosphere Reserve 🇲🇽 Mexico
<5%
45 Great Smoky Mountains National Park 🇺🇸 United States
<5%
46 Grand Canyon National Park 🇺🇸 United States
<5%
47 Pyrénées National Park 🇫🇷 France
<5%
48 Satpura National Park 🇮🇳 India
<5%
49 Pacific Rim National Park Reserve 🇨🇦 Canada
<5%
50 Ranthambore National Park 🇮🇳 India
<5%
51 Everglades National Park 🇺🇸 United States
<5%
52 Redwood National Park 🇺🇸 United States
<5%
53 Big Cypress National Preserve 🇺🇸 United States
<5%
54 Jim Corbett National Park 🇮🇳 India
<5%
55 Manas National Park 🇮🇳 India
<5%
56 Cairngorms National Park 🇬🇧 United Kingdom
<5%
57 Denali National Park 🇺🇸 United States
<5%
58 Yosemite National Park 🇺🇸 United States
<5%
59 Acadia National Park 🇺🇸 United States
<5%
60 Wood Buffalo National Park 🇨🇦 Canada
Insufficient data
61 Katmai National Park 🇺🇸 United States
Insufficient data
62 Cabo Pulmo National Park 🇲🇽 Mexico
Insufficient data
63 Nikko National Park 🇯🇵 Japan
Insufficient data
64 Triglav National Park 🇸🇮 Slovenia
Insufficient data
65 Reserva de la Biosfera Mariposa Monarca 🇲🇽 Mexico
Insufficient data
66 Khangchendzonga National Park 🇮🇳 India
Insufficient data
67 Thingvellir National Park 🇮🇸 Iceland
Insufficient data
68 Tatra National Park 🇸🇰 Slovakia
Insufficient data
69 Gauja National Park 🇱🇻 Latvia
Insufficient data
70 Isle Royale National Park 🇺🇸 United States
Insufficient data
71 Bandhavgarh National Park 🇮🇳 India
Insufficient data
72 Sierra Nevada National Park 🇪🇸 Spain
Insufficient data
73 Zion National Park 🇺🇸 United States
Insufficient data
74 Gros Morne National Park 🇨🇦 Canada
Insufficient data
75 Guadalupe Mountains National Park 🇺🇸 United States
Insufficient data
76 Royal Manas National Park 🇧🇹 Bhutan
Insufficient data

Quick answers

What are the chances of seeing a Gadwall in Saguaro National Park?

About 10% of wildlife watchers report a Gadwall sighting in Saguaro National Park, based on 4,911 verified sightings from GBIF citizen-science data.

When is the best time to see Gadwall in Saguaro National Park?

December has the highest sighting rate for Gadwall in Saguaro National Park in our monthly data.

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