Passerculus sandwichensis
Silhouette: Caleb M. Gordon · PhyloPic
In 3 days ~30% in a week ~50%
The Savannah sparrow (Passerculus sandwichensis) is a small New World sparrow that is the only member of the genus Passerculus. It is a widespread and abundant species that occupies open grassland habitats in North America.
Over most of its range it is migratory, breeding in Canada and the northern United States while wintering in Mexico and the southern United States. It is a sexually monomorphic species that is quite variable in appearance. Around 17 subspecies are currently recognised. These are divided into several groups, some of which have sometimes been considered as separate species.
The species name sandwichensis is Latin from Sandwich Sound (now Prince William Sound) in southern Alaska from where the first specimen was collected. The common name refers to Savannah, Georgia, where Alexander Wilson observed the species in 1811.
The Savannah sparrow was formally described in 1789 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus's Systema Naturae. He placed it with the buntings in the genus Emberiza and coined the binomial name Emberiza sandwichensis. Gmelin based his text on the Sandwich bunting that had been... Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San Diego | 🇺🇸 United States | |
| 2 | Calgary | 🇨🇦 Canada | |
| 3 | Los Angeles | 🇺🇸 United States | |
| 4 | Toluca | 🇲🇽 México | |
| 5 | Seattle | 🇺🇸 United States | |
| 6 | León | 🇲🇽 México | |
| 7 | Chicago | 🇺🇸 United States | |
| 8 | San Francisco | 🇺🇸 United States | |
| 9 | Boston | 🇺🇸 United States | |
| 10 | Vancouver | 🇨🇦 Canada |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Ralph Perkins II Wildlife Center and Woods Garden | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Savannah Sparrow sighting in León on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 99th most-seen of the 124 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
April
In that month about 30% of wildlife watchers report a Savannah Sparrow in León on a given day, against under 5% in January, May and July–November, the lowest months. That is one of León's driest months, with about 5 mm of rain against 170 mm in July. June has too few records to rate.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Savannah Sparrow sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
6th of 35
Of the 35 cities where we can rate Savannah Sparrow sightings, León ranks 6th at about 10%. The best odds are in San Diego (United States, about 20%), Calgary (Canada, about 10%) and Los Angeles (United States, about 10%).
Same family: Passerellidae
The closest relatives of the Savannah Sparrow that you can see in León (family Passerellidae, New World Sparrows) are Canyon Towhee (about 50%), Lincoln's Sparrow (about 20%) and Chipping Sparrow (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Savannah Sparrow is recorded against all the birds logged in León (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.
