Silver-haired Bat
Lasionycteris noctivagans
The silver-haired bat is a solitary migratory species of vesper bat in the family Vespertilionidae and the only member of the genus Lasionycteris. Source
Where is the Silver-haired Bat now?
In the last 8 weeks this bat was recorded 602 times across 26 areas (each area is a 5 degree square).
See the Silver-haired Bat on the live map
How the Silver-haired Bat moves through the year
Over the weeks it was present in the past year, its centre in North America ranged from 31°N in September to 52°N in August, about 2,300 km apart.
When does the Silver-haired Bat arrive?
The week it was first heard regularly in each region, after at least six weeks away. Dates differ from south to north, so a region has a range.
| Region | First arrival | Last arrival | Typical peak | Areas |
|---|---|---|---|---|
| North America | 28 September 2026 | 28 September 2026 | 12 October 2026 | 1 |
Arriving at the same time in North America
- Golden-crowned Kinglet Regulus satrapa
- Dark-eyed Junco Junco hyemalis
- Gadwall Mareca strepera
- Tundra Swan Cygnus columbianus
- Trumpeter Swan Cygnus buccinator
- Snow Goose Anser caerulescens
- American Tree Sparrow Spizelloides arborea
- Common Redpoll Acanthis flammea
Every arrival in North America, month by month
Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.