Rissa tridactyla
Silhouette: Andy Wilson · PhyloPic
In 3 days <5%
The black-legged kittiwake (Rissa tridactyla) is a seabird species in the gull family Laridae. This species was first described by Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae as Larus tridactylus. The English name is derived from its call, a shrill 'kittee-wa-aaake, kitte-wa-aaake'. In North America, this species is known as the black-legged kittiwake to differentiate it from the red-legged kittiwake, but in Europe, where it is the only member of the genus, it is often known just as kittiwake.
The black-legged kittiwake was formally described in 1758 by the Swedish naturalist Carl Linnaeus in the tenth edition of his Systema Naturae. He placed with the gulls in the genus Larus and coined the binomial name Larus tridactylus. Linnaeus specified the type location as northern Europe but this has been restricted to Great Britain. The black-legged kittiwake is now placed together with the red-legged kittiwake in the genus Rissa that was introduced in 1826 by the English naturalist James Stephens. The genus name is from the Icelandic word "rita" for a black-legged kittiwake. The specific tridactyla is from Ancient Greek tridaktulos meaning "three-toed... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Svalbard | 🇳🇴 Norway | |
| 2 | Kenai Fjords National Park | 🇺🇸 United States | |
| 3 | Vatnajokull National Park | 🇮🇸 Iceland | |
| 4 | Katmai National Park | 🇺🇸 United States | |
| 5 | Gros Morne National Park | 🇨🇦 Canada | |
| 6 | Wrangell-St. Elias National Park | 🇺🇸 United States | |
| 7 | Redwood National Park | 🇺🇸 United States | |
| 8 | Great Bear Rainforest | 🇨🇦 Canada | |
| 9 | Cape Breton Highlands National Park | 🇨🇦 Canada | |
| 10 | Acadia National Park | 🇺🇸 United States | |
| 11 | Wadden Sea National Park | 🇩🇪 Germany | |
| 12 | Olympic National Park | 🇺🇸 United States | |
| 13 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 14 | Point Pelee National Park | 🇨🇦 Canada | |
| 15 | Pacific Rim National Park Reserve | 🇨🇦 Canada |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Dublin | 🇮🇪 Ireland | |
| 2 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 3 | Liverpool | 🇬🇧 United Kingdom | |
| 4 | Tel Aviv | 🇮🇱 Israel | |
| 5 | Calgary | 🇨🇦 Canada | |
| 6 | San Diego | 🇺🇸 United States | |
| 7 | London | 🇬🇧 United Kingdom | |
| 8 | Manchester | 🇬🇧 United Kingdom | |
| 9 | Chicago | 🇺🇸 United States | |
| 10 | Porto | 🇵🇹 Portugal |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | The Blue Planet | 🇩🇰 Denmark | |
| 2 | Alaska SeaLife Center | 🇺🇸 United States | |
| 3 | Oceanium | 🇳🇱 Netherlands | |
| 4 | Montreal Biodome | 🇨🇦 Canada | |
| 5 | Nordsøen Oceanarium | 🇩🇰 Denmark |
Rare
Under 5% of wildlife watchers report a Black-legged Kittiwake sighting in San Francisco on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 357th most-seen of the 375 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 Black-legged Kittiwake in San Francisco 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 Black-legged Kittiwake 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 15
Of the 15 cities where we can rate Black-legged Kittiwake sightings, San Francisco ranks 14th at under 5%. The best odds are in Dublin (Ireland, about 10%), Rotterdam [The Hague] (Netherlands, under 5%) and Liverpool (United Kingdom, under 5%).
Same family: Laridae
The closest relatives of the Black-legged Kittiwake that you can see in San Francisco (family Laridae, Gulls, Terns, and Skimmers) are California Gull (about 40%), Western Gull (about 30%) and Ring-billed Gull (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Black-legged Kittiwake is recorded against all the birds logged in San Francisco (8 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.
