Thank you for visiting the New Hampshire Fish and Game Department website. NH Fish and Game



Go Batty This Summer!

Little Brown Bat Drawing




Be the most creative host in your neighborhood – host a bat count this summer! New Hampshire’s two most common bat species, the little brown bat and the big brown bat, use buildings as their summer roosts. Abandoned houses, barns, church steeples – and even currently-occupied structures – can provide a summer home to female bats and their young.


Monitoring these “maternity colonies” can give biologists a good idea of how bat populations in an area are doing from year to year. With the occurrence of White Nose Syndrome in New Hampshire, monitoring these colonies is more important than ever. People in states all across eastern US are counting bats this summer. Won’t you join them?


Colonies can be monitored by conducting a “bat count” at a summer colony in your area. We ask that you count bats as they exit their summer roost at dusk in June, then again later in the summer to see how the colony has grown as pups begin flying. The documents below provide all of the information you need to get started. So please, grab a friend or two and go batty this summer for conservation.

All data sheets should be filled out and returned to the address at the bottom of this page. Your privacy is important to us; your information is only used for this research project.


How to Do a Bat Count PDF Document - Instructions on how and when to conduct a ‘bat count’ once you locate a summer bat colony.


FORMS for you to use in monitoring bats:

Site and Landowner Information

This form lets us know where the colony is and who owns it.


Bat Colony Count Data Form

This is the data sheet to use when you are doing your count. Use as separate sheet for each day you count.


Enter your data online here: NH Bat Counts Data

Or return all forms to:

Colony Bat Count
Nongame and Endangered Wildlife Program
NH Fish and Game Dept
11 Hazen Dr
Concord, NH 03301


Thanks for participating!


Subscribe to the NH Bat Counts newsletter to receive notifications about the bat counting season, information on training opportunities, and results from summer bat counts.