Birds that capture insects on the wing such as swallows and flycatchers are declining across northeastern North America. This group, called aerial insectivores, includes nighthawks and a variety of other birds. NH Audubon, with funding from NH Fish & Game, is piloting the "Swallow Colony Registry" (Swallow CORE) to collect data from volunteers on the distribution and abundance of swallows in New Hampshire, focusing on the colonial species that are showing the steepest declines.

Although we have data on statewide population trends, we lack current information on the statewide distribution of breeding colonies in the state. We are collecting information on nest sites of four swallow species: Barn Swallow, Cliff Swallow, Bank Swallow, and Purple Martin.

If you'd like to help, please see the information below:

An Overview of Swallow CORE

–Background and why swallows are declining

Swallow Fact Sheet

–Information on the swallow species of NH

Swallow CORE Volunteer Packet

–Instructions and forms

Swallow colony registry

–As of January 1, 2010