Calypte anna
Silhouette: Margot Michaud · PhyloPic
In 3 days <5%
Anna's hummingbird (Calypte anna) is a North American species of hummingbird named after Anna Masséna, Duchess of Rivoli. It is native to western coastal regions of North America. Until the late 20th century, Anna's hummingbirds migrated from locations as far north as Alaska and coastal British Columbia, returning south to breed in Baja California and Southern California.
Since the 1970s, ornamental plants in residential areas along the Pacific coast and inland deserts provided expanded nectar and nesting sites, allowing the species to expand its breeding range to northern coastal regions without migrating. Year-round residence of Anna's hummingbirds in the Pacific Northwest is an example of ecological release dependent on acclimation to colder winter temperatures, introduced plants, and human provision of nectar feeders during winter.
These birds feed on nectar from flowers using a long extendable tongue. They also consume small insects and other arthropods caught in flight or gleaned from vegetation. Anna's hummingbird was formally described and illustrated in 1829 by the French naturalist René Lesson in his Histoire naturelle des Oiseaux-Mouches from a specimen that... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Channel Islands National Park | 🇺🇸 United States | |
| 2 | Sequoia and Kings Canyon National Parks | 🇺🇸 United States | |
| 3 | Joshua Tree National Park | 🇺🇸 United States | |
| 4 | Saguaro National Park | 🇺🇸 United States | |
| 5 | Death Valley National Park | 🇺🇸 United States | |
| 6 | El Vizcaíno Biosphere Reserve | 🇲🇽 Mexico | |
| 7 | Yosemite National Park | 🇺🇸 United States | |
| 8 | Olympic National Park | 🇺🇸 United States | |
| 9 | Great Bear Rainforest | 🇨🇦 Canada | |
| 10 | Redwood National Park | 🇺🇸 United States | |
| 11 | Pacific Rim National Park Reserve | 🇨🇦 Canada | |
| 12 | Kluane National Park | 🇨🇦 Canada | |
| 13 | Bahía de Loreto National Park | 🇲🇽 Mexico | |
| 14 | Zion National Park | 🇺🇸 United States | |
| 15 | Big Bend National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Mesa | 🇺🇸 United States | |
| 2 | Tijuana | 🇲🇽 México | |
| 3 | San Francisco | 🇺🇸 United States | |
| 4 | Sacramento | 🇺🇸 United States | |
| 5 | Las Vegas | 🇺🇸 United States | |
| 6 | Phoenix | 🇺🇸 United States | |
| 7 | San Diego | 🇺🇸 United States | |
| 8 | Portland | 🇺🇸 United States | |
| 9 | Seattle | 🇺🇸 United States | |
| 10 | Vancouver | 🇨🇦 Canada |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | San Diego Zoo | 🇺🇸 United States | |
| 2 | Toledo Zoo | 🇺🇸 United States | |
| 3 | Arizona-Sonora Desert Museum | 🇺🇸 United States | |
| 4 | Mountainaire Avian Rescue Society | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report an Anna's Hummingbird sighting in Houston on a given day, based on 69 verified sightings from GBIF citizen-science data. It is the 219th most-seen of the 302 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 an Anna's Hummingbird in Houston on a given day, so our monthly data shows no clear season.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Anna's Hummingbird sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
16th of 16
Of the 16 cities where we can rate Anna's Hummingbird sightings, Houston ranks 16th at under 5%. The best odds are in Mesa (United States, about 80%), Tijuana (México, about 80%) and San Francisco (United States, about 80%).
GBIF citizen-science records
It is estimated from how often the Anna's Hummingbird is recorded against all the birds logged in Houston (69 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.
