Dryobates nuttallii
Silhouette: Andy Wilson · PhyloPic
In 3 days ~70% in a week >90%
Nuttall's woodpecker (Dryobates nuttallii) is a species of woodpecker named after naturalist Thomas Nuttall in 1843. They are found in oak woodlands of California and are similar to the ladder-backed woodpecker in both genetics and appearance.
Nuttall's woodpecker has striped black and white patterned wings and tail feathers with white. Its undercarriage is a primarily white coat with a few spotted black regions. It has a black forehead with white streaks on the sides and an unbarred black region at the top of the back. Adult males have a distinguishable red crown which females do not. However, this physical feature is present in the juvenile of both sexes. Juvenile birds look nearly identical to adults, excluding that juveniles typically have some white color in the form of streaks on their heads. They have zygodactyl feet, where the two toes facing forward and two facing backward along with stiff tail feathers which allows them to maintain a secure, vertical position on trees; typical of woodpeckers. The mass of the Nuttall's woodpecker ranges from 30 to 45 g (1.1 to 1.6 oz), with a body length of 16 to 18 cm (6.3 to 7.1 in). It is traditionally classified a small... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sequoia and Kings Canyon National Parks | 🇺🇸 United States | |
| 2 | Yosemite National Park | 🇺🇸 United States | |
| 3 | Channel Islands National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sacramento | 🇺🇸 United States | |
| 2 | Los Angeles | 🇺🇸 United States | |
| 3 | San Francisco | 🇺🇸 United States | |
| 4 | San Diego | 🇺🇸 United States | |
| 5 | Tijuana | 🇲🇽 México |
Likely
About 40% of wildlife watchers report a Nuttall's Woodpecker sighting in San Francisco on a given day, based on 38,481 verified sightings from GBIF citizen-science data. It is the 23rd most-seen of the 375 birds we can rate there. Over three days the chance rises to about 70%, and over a week to over 90%, if each day is a fresh chance.
September
In that month about 50% of wildlife watchers report a Nuttall's Woodpecker in San Francisco on a given day, against about 30% in July and November–March, the lowest months. That is one of San Francisco's driest months, with almost no rain against 110 mm in December.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Nuttall's Woodpecker sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 5
Of the 5 cities where we can rate Nuttall's Woodpecker sightings, San Francisco ranks 3rd at about 40%. The best odds are in Sacramento (United States, about 60%) and Los Angeles (United States, about 40%).
GBIF citizen-science records
It is estimated from how often the Nuttall's Woodpecker is recorded against all the birds logged in San Francisco (38,481 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.
