Urile penicillatus
Silhouette: Caleb M. Gordon · PhyloPic
In 3 days ~10% in a week ~30%
Brandt's cormorant (Urile penicillatus) is a strictly marine bird of the cormorant family of seabirds that inhabits the Pacific coast of North America. It ranges, in the summer, from Alaska to the Gulf of California, but the population north of Vancouver Island migrates south during the winter. Its specific name, penicillatus is Latin for a painter's brush (pencil of hairs), in reference to white plumes on its neck and back during the early breeding season. The common name honors the German naturalist Johann Friedrich von Brandt of the Academy of Sciences at St. Petersburg, who described the species from specimens collected on expeditions to the Pacific during the early 19th century.
It was formerly classified in the genus Phalacrocorax, but a 2014 study supported reclassifying it and several other Pacific cormorant species into the genus Urile. The IOU followed this classification in 2021. The average size of a Brandt's cormorant is 4.6 pounds. They have a length of about 34 inches and their wingspan is 4 feet. During the breeding season, adults have a blue throat patch.
Brandt's cormorants live on the Pacific coast of... Wikipedia →
Begging call0:11
United States · 2016
© David Vander Pluym · XC354689 · CC BY-NC-SA 4.0
Recording0:18
United States · 2021
© Cricket Raspet · iNaturalist · CC BY 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Channel Islands National Park | 🇺🇸 United States | |
| 2 | Cabo Pulmo National Park | 🇲🇽 Mexico | |
| 3 | Bahía de Loreto National Park | 🇲🇽 Mexico | |
| 4 | El Vizcaíno Biosphere Reserve | 🇲🇽 Mexico | |
| 5 | Pacific Rim National Park Reserve | 🇨🇦 Canada | |
| 6 | Olympic National Park | 🇺🇸 United States | |
| 7 | Redwood National Park | 🇺🇸 United States | |
| 8 | Great Bear Rainforest | 🇨🇦 Canada |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San Diego | 🇺🇸 United States | |
| 2 | Tijuana | 🇲🇽 México | |
| 3 | San Francisco | 🇺🇸 United States | |
| 4 | Seattle | 🇺🇸 United States | |
| 5 | Los Angeles | 🇺🇸 United States | |
| 6 | Vancouver | 🇨🇦 Canada |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | SeaWorld San Diego | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Townsend's Cormorant sighting in San Francisco on a given day, based on 5,455 verified sightings from GBIF citizen-science data. It is the 124th most-seen of the 375 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
May to October
In those months about 10% of wildlife watchers report a Townsend's Cormorant in San Francisco on a given day, against under 5% in November to April, the lowest months. Those are among San Francisco's driest months, with about 10 mm of rain a month against 110 mm in December.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Townsend's Cormorant sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 6 cities where we can rate Townsend's Cormorant sightings, San Francisco ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in San Diego (United States, about 10%) and Tijuana (México, about 10%).
GBIF citizen-science records
It is estimated from how often the Townsend's Cormorant is recorded against all the birds logged in San Francisco (5,455 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.
