News & Events

Swallow CORE

Swallow CORE: Wildlife Project
Cliff Swallow in nest, Photo by Pam Hunt

Six species of swallows breed in New Hampshire, and populations of five of these have been declining since the 1960s. These declines are part of a more widespread decline of “aerial insectivores” (birds that capture insects on the wing, including swifts, swallows, nighthawks, and flycatchers) across northeastern North America. Biologists are unsure why these species are declining, but possible explanations include pesticides (on both breeding and wintering grounds), habitat loss, and climate change.
With respect to swallows, although there are data on population trends, we lack current information on the statewide distribution of breeding colonies. Such data were last collected during the Breeding Bird Atlas in the early 1980s, and in the decades since we have seen many former swallow colonies disappear or shrink in size. The first step in effective conservation of these species is a better understanding of their status, and to this end NH Audubon, with funding from NH Fish and Game, is piloting the “Swallow Colony Registry” (Swallow CORE). Swallow CORE uses volunteers to collect data on the distribution and abundance of swallows in New Hampshire, focusing on the colonial species that are showing the steepest declines: Barn Swallow, Cliff Swallow, Bank Swallow, and Purple Martin.
See more detailed information on Swallow CORE, plus project materials.
Project Leader: Becky Suomala

Explore 39 wildlife sanctuaries throughout all 10 counties of New Hampshire.

Committed to the conservation of ecologically important lands.

We regularly observe and count 14 species at NH Audubon’s Raptor Observatories.

NH Audubon Protects

The New Hampshire Audubon offers multiple opportunities for those interested in joining us as a member or donating for one of our various causes.

About Us

Founded in 1914, NH Audubon’s mission is to protect New Hampshire’s natural environment for wildlife and for people. It is an independent statewide membership organization with four nature centers throughout the state. Expert educators give programs to children, families, and adults at centers and in schools. Staff biologists and volunteers conduct bird conservation efforts such as the Peregrine Falcon restoration. NH Audubon protects thousands of acres of wildlife habitat and is a voice for sound public policy on environmental issues. For information on NH Audubon, including membership, volunteering, programs, sanctuaries, and publications, call 224-9909, or visit