Swan Goose

Swan Goose

Anser cygnoides

Silhouette: Rebecca Groom · PhyloPic

Daily sighting probability Insufficient data
at Arenal Volcano National Park
2 Verified sightings at Arenal Volcano National Park From 2019 to 2026
1,760 Verified sightings across all 22 parks From 2019 to 2026
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Swan Goose

The swan goose (Anser cygnoides) is a large goose with a natural breeding range in inland Mongolia, Northeast China, and the Russian Far East. It is migratory and winters mainly in central and eastern China. Vagrant birds are encountered in Japan and Korea (where it used to winter in numbers when it was more common), and more rarely in Kazakhstan, Laos, coastal Siberia, Taiwan, Thailand and Uzbekistan.

While uncommon in the wild, this species has been extensively domesticated, when it is known as Chinese goose. Introduced and feral populations of its domestic breeds occur in many places outside its natural range. The wild form is also kept in collections, and escapes are not unusual amongst feral flocks of other Anser and Branta geese.

The swan goose was formally described in 1758 by the Swedish naturalist Carl Linnaeus in the tenth edition of his Systema Naturae under the binomial name Anas cygnoid. The original spelling of "cygnoid." (with a fullstop, suggesting an abbreviation) is widely treated as an orthographic error to be corrected to "cygnoides", but some authors regard cygnoid (without the fullstop) to be the correct original spelling which should be used, citing... Wikipedia →

Closest Relatives at Arenal Volcano National Park

Muscovy Duck

Muscovy Duck

☀️ Diurnal Bird

Cairina moschata

Daily sighting probability <5% · Rare
Ring-necked Duck
LC

Ring-necked Duck

☀️ Diurnal Bird

Aythya collaris

Daily sighting probability Insufficient data
Black-bellied Whistling-Duck
LC

Black-bellied Whistling-Duck

☀️ Diurnal Bird

Dendrocygna autumnalis

Daily sighting probability <5% · Rare
Blue-winged Teal
LC

Blue-winged Teal

☀️ Diurnal Bird

Spatula discors

Daily sighting probability <5% · Rare
Lesser Scaup
LC

Lesser Scaup

☀️ Diurnal Bird

Aythya affinis

Daily sighting probability <5% · Rare
Mallard
LC

Mallard

☀️ Diurnal Bird

Anas platyrhynchos

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 Pyrénées National Park 🇫🇷 France
<5%
2 Saguaro National Park 🇺🇸 United States
<5%
3 Gobi Gurvansaikhan National Park 🇲🇳 Mongolia
<5%
4 Wadden Sea National Park 🇩🇪 Germany
<5%
5 Everglades National Park 🇺🇸 United States
<5%
6 Sundarbans National Park 🇮🇳 India
Insufficient data
7 Ría Lagartos Biosphere Reserve 🇲🇽 Mexico
Insufficient data
8 Corcovado National Park 🇨🇷 Costa Rica
Insufficient data
9 Arenal Volcano National Park 🇨🇷 Costa Rica
Insufficient data
10 Aigüestortes National Park 🇪🇸 Spain
Insufficient data
11 Sepilok 🇲🇾 Malaysia
Insufficient data
12 Tortuguero National Park 🇨🇷 Costa Rica
Insufficient data
13 Sierra de Guadarrama National Park 🇪🇸 Spain
Insufficient data
14 La Amistad International Park (Panama) 🇵🇦 Panama
Insufficient data
15 Cévennes National Park 🇫🇷 France
Insufficient data
16 Khao Yai National Park 🇹🇭 Thailand
Insufficient data
17 Bandhavgarh National Park 🇮🇳 India
Insufficient data
18 Monfragüe National Park 🇪🇸 Spain
Insufficient data
19 Kinabatangan Wildlife Sanctuary 🇲🇾 Malaysia
Insufficient data
20 Kanha National Park 🇮🇳 India
Insufficient data
21 Braulio Carrillo National Park 🇨🇷 Costa Rica
Insufficient data
22 Shenandoah National Park 🇺🇸 United States
Insufficient data
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