Anser serrirostris
Silhouette: Rebecca Groom · PhyloPic
In 3 days <5%
The tundra bean goose (Anser serrirostris) is a goose that breeds in northern Siberia. This and the taiga bean goose are recognised as separate species by the American Ornithological Society and International Ornithologists' Union, but are considered a single species by other authorities (collectively called bean goose). It is migratory and winters further south in Asia. The taiga and tundra bean goose diverged about 2.5 million years ago and established secondary contact ca. 60,000 years ago, resulting in extensive gene flow.
The length ranges from 68 to 90 cm (27–35 in), wingspan from 140 to 174 cm (55–69 in) and weight from 1.7–4 kg (3.7–8.8 lb). In the nominate subspecies, males average 3.2 kg (7.1 lb) and females average 2.84 kg (6.3 lb). The bill is black at the base and tip, with an orange band across the middle; the legs and feet are also bright orange.
The upper wing-coverts are dark brown, as in the white-fronted goose (Anser albifrons) and the lesser white-fronted goose (A. erythropus), but differing from these in having narrow white fringes to the feathers. The voice is a loud honking, higher pitched in the smaller subspecies.
The closely related pink-footed... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Biebrza National Park | 🇵🇱 Poland | |
| 2 | Gauja National Park | 🇱🇻 Latvia | |
| 3 | Białowieża National Park | 🇵🇱 Poland | |
| 4 | Wadden Sea National Park | 🇩🇪 Germany | |
| 5 | Hortobágy National Park | 🇭🇺 Hungary | |
| 6 | Kiskunság National Park | 🇭🇺 Hungary | |
| 7 | Bavarian Forest National Park | 🇩🇪 Germany |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Moscow Zoo | 🇷🇺 Russia | |
| 2 | Beijing Zoo | 🇨🇳 China | |
| 3 | Kunming Zoo | 🇨🇳 China |
Rare
Under 5% of wildlife watchers report a Tundra Bean Goose sighting in Taipei on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 213th most-seen of the 266 birds we can rate there. Over three days the chance rises to under 5%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Tundra Bean Goose in Taipei on a given day, so our monthly data shows no clear season.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Tundra Bean Goose sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
14th of 14
Of the 14 cities where we can rate Tundra Bean Goose sightings, Taipei ranks 14th at under 5%. The best odds are in Seoul (South Korea, about 10%), Daegu (South Korea, about 10%) and Philadelphia (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Tundra Bean Goose is recorded against all the birds logged in Taipei (18 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
