Melanitta stejnegeri
In 3 days <5%
Stejneger's scoter (Melanitta stejnegeri), also known as the Siberian scoter, is a large sea duck. The genus name is derived from Ancient Greek melas "black" and netta "duck". Stejneger's scoter was described by the American ornithologist Robert Ridgway in 1887 and given the binomial name Oidemia stejnegeri. The specific name was chosen to honour the Norwegian born ornithologist Leonhard Stejneger.
It was formerly considered to be conspecific with the white-winged scoter. It was suggested to be a full species, according to a new study, and the species were split in 2019. There are a number of differing characteristics of Stejneger's scoter and the white-winged scoter. Males of the white-winged scoter have browner flanks, dark yellow coloration of most of the bill and a less tall bill knob, approaching the velvet scoter. The male Stejneger's scoter has a very tall knob at the base of its mostly orange-yellow bill. The males of both species are very similar and best distinguished by head shape; White-winged scoters tend to have "two-stepped" profile between the bill and the head, compared to the long "Roman nose" profile of Stejneger's scoter similar... Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Siberian White-winged Scoter sighting in Tokyo on a given day, based on 112 verified sightings from GBIF citizen-science data. It is the 129th most-seen of the 229 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 Siberian White-winged Scoter in Tokyo on a given day, so our monthly data shows no clear season.
Yes
Of the 2 cities where we can rate Siberian White-winged Scoter sightings, Tokyo has the highest daily chance: under 5%. Next come Nagoya (Japan, under 5%).
GBIF citizen-science records
It is estimated from how often the Siberian White-winged Scoter is recorded against all the birds logged in Tokyo (112 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.
