Dasypterus intermedius
Silhouette: Margot Michaud · PhyloPic
In 3 days ~10% in a week ~20%
The northern yellow bat (Lasiurus intermedius) is a non-migratory bat in the family Vespertilionidae, typically active year-round except during abnormally frigid winter weather, during which they will induce torpor. The northern yellow bat is larger than the southern yellow bat, and has an average body length of 14 cm, weight of 14-31 g, and a wing span of 35–41 cm. Its body fur ranges in color from yellow-orange to gray-brown, and is dark tipped. Wing membranes are generally darker than the body, and forearms are light. Unusually for lasiurine bats, only the front half of the tail membrane is furred, and this species also lacks white markings on the shoulders and wrists.
Primarily found along the coastal regions of the southeastern United States and eastern Texas, Cuba, coastal Mexico, and Central American countries of Belize, Costa Rica, El Salvador, Guatemala, and Honduras. This is the most abundant bat species in some regions of Florida. This species has a few occurrence records from Virginia, North Carolina, and Pennsylvania.
This species typically inhabits wooded areas near permanent water sources or coastal habitats with Spanish... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Northern Yellow Bat sighting in Austin on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 19th most-seen of the 23 mammals we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
December
In that month about 10% of wildlife watchers report a Northern Yellow Bat in Austin on a given day, against under 5% in January to November, the lowest months.
Between 11 pm and 2 am
Across all the parks we cover, that three-hour window holds the most Northern Yellow Bat sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Yes
Of the 2 cities where we can rate Northern Yellow Bat sightings, Austin has the highest daily chance: under 5%. Next come Miami (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Northern Yellow Bat is recorded against all the mammals logged in Austin (6 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.
