Silver-haired Bat (Lasionycteris noctivagans) is in the Evening Bats family (Vespertilionidae). Across the U.S., iNaturalist users have logged 1,882 research-grade observations of it in our sample, peaking in October.
Seasonal pattern in the national data: spring and fall migrant. Counts also reflect when people are out photographing, so compare months within a state rather than across states.
Conservation status (iNaturalist): G3G4.
When to photograph Silver-haired Bat: observations by month (U.S.)
About Silver-haired Bat
The silver-haired bat (Lasionycteris noctivagans) is a solitary migratory species of vesper bat in the family Vespertilionidae and the only member of the genus Lasionycteris.From Wikipedia via iNaturalist — article, CC BY-SA.
Silver-haired Bat by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| Illinois | 281 | October | Sep–Oct |
| New York | 129 | May | Mar–May |
| Ohio | 126 | October | Oct–Nov |
| Virginia | 123 | October | Oct–May |
| California | 95 | July | Jul–Oct |
| New Mexico | 84 | May | May–May |
| Utah | 66 | May | Apr–Jun |
| Minnesota | 65 | July | Jul–Oct |
| Wisconsin | 65 | October | Sep–Oct |
| North Carolina | 63 | January | Oct–Apr |
| Washington | 61 | March | Feb–Dec |
| New Jersey | 58 | September | Sep–Oct |
| Maryland | 56 | April | Mar–May |
| Pennsylvania | 56 | October | Sep–Dec |
| Michigan | 49 | May | Apr–Oct |
| Oregon | 44 | August | Jul–Sep |
| Colorado | 42 | October | Jul–Oct |
| Kentucky | 42 | November | Oct–Nov |
| Idaho | 40 | September | Aug–Oct |
| Arizona | 34 | June | Apr–Jul |
| Indiana | 33 | October | Oct–Oct |
| Missouri | 29 | October | Oct–Oct |
| Tennessee | 26 | October | Oct–Nov |
| Montana | 25 | August | Aug–Sep |
| Massachusetts | 21 | August | Aug–Nov |
| Nevada | 20 | May | May–Nov |
| Texas | 16 | October | Sep–Oct |
| Nebraska | 14 | September | Sep–Oct |
| West Virginia | 14 | February | Feb–Feb |
| Georgia | 11 | October | Oct–Nov |
| North Dakota | 11 | May | May–May |
| Connecticut | 10 | October | Sep–Oct |
| South Dakota | 9 | July | Jun–Sep |
| Arkansas | 8 | February | Oct–Feb |
| District of Columbia | 8 | May | Apr–May |
| Wyoming | 8 | August | Aug–Sep |
| Maine | 7 | August | Jun–Aug |
| Delaware | 6 | January | Dec–Jan |
| Iowa | 5 | September | Jul–Sep |
| Oklahoma | 5 | October | Sep–Oct |
Main season = months with at least 30% of the state's peak-month count.
Related mammals (Evening Bats)
Photography tips
- Keep a legal and safe distance: 100 yards from bears and wolves and 25 yards from other large animals in national parks.
- Dawn and dusk are peak activity times for most mammals.
- Use your car as a blind on wildlife drives.
FAQ
When is the best time to photograph Silver-haired Bat?
Nationally, October has the most observations, with the main season from August to November.
Where is Silver-haired Bat most often seen?
The most observations come from Illinois, New York, Ohio.