Alca torda
Silhouette: PhyloPic
In 3 days <5%
The razorbill (Alca torda) is a North Atlantic colonial seabird and the only extant member of the genus Alca of the family Alcidae, the auks. It is the closest living relative of the extinct great auk (Pinguinus impennis). Historically, it has also been known as "auk", "razor-billed auk" and "lesser auk".
Razorbills are primarily black with a white underside. The male and female are identical in plumage; however, males are generally larger than females. This agile bird, which is capable of both flight and diving, has a predominantly aquatic lifestyle and only comes to land in order to breed. It is monogamous, choosing one partner for life. Females lay one egg per year. Razorbills nest along coastal cliffs in enclosed or slightly exposed crevices. The parents spend equal amounts of time incubating, and once the chick has hatched, they take turns foraging for their young.
Presently, this species faces major threats, including the destruction of breeding sites, oil spills, and deterioration of food quality. As a result, razorbills have on occasion been seen outside of their normal range as they search for alternative food sources. The IUCN records the population of the species as fluctuating. It decreased from 2015 to 2021, and appears to be increasing or stable at the present. It is estimated that the current global razorbill population lies between 838,000 and 1,600,000 mature individuals. In 1918, the razorbill was protected in the United States by the Migratory Bird Treaty Act. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Vatnajokull National Park | 🇮🇸 Iceland | |
| 2 | Wadden Sea National Park | 🇩🇪 Germany | |
| 3 | Cape Breton Highlands National Park | 🇨🇦 Canada | |
| 4 | Acadia National Park | 🇺🇸 United States | |
| 5 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 6 | Gros Morne National Park | 🇨🇦 Canada | |
| 7 | Svalbard | 🇳🇴 Norway | |
| 8 | Doñana National Park | 🇪🇸 Spain | |
| 9 | Camargue | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Dublin | 🇮🇪 Ireland | |
| 2 | Toronto | 🇨🇦 Canada | |
| 3 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 4 | Barcelona | 🇪🇸 Spain | |
| 5 | New York City | 🇺🇸 United States | |
| 6 | Boston | 🇺🇸 United States | |
| 7 | Porto | 🇵🇹 Portugal | |
| 8 | Lisbon | 🇵🇹 Portugal | |
| 9 | Montreal | 🇨🇦 Canada |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Copenhagen Zoo | 🇩🇰 Denmark | |
| 2 | Lisbon Oceanarium | 🇵🇹 Portugal | |
| 3 | Odense Zoo | 🇩🇰 Denmark | |
| 4 | L'Oceanogràfic | 🇪🇸 Spain | |
| 5 | National Aquarium | 🇺🇸 United States | |
| 6 | Montreal Biodome | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Razorbill sighting in Doñana National Park on a given day, based on 24 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 206th most-seen of the 234 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 Razorbill in Doñana National Park on a given day, so our monthly data shows no clear season.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Razorbill sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
8th of 9
Of the 9 parks where we can rate Razorbill sightings, Doñana National Park ranks 8th at under 5%. The best odds are in Vatnajokull National Park (Iceland, about 10%), Wadden Sea National Park (Germany, under 5%) and Cape Breton Highlands National Park (Canada, under 5%).
Same order: Charadriiformes
The closest relatives of the Razorbill that you can see in Doñana National Park (order Charadriiformes, Shorebirds and Allies) are Black-winged Stilt (about 70%), Pied Avocet (about 40%) and Black-tailed Godwit (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Razorbill is recorded against all the birds logged in Doñana National Park (24 verified sightings from 2019 to 2026), 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.
