Threats to New Hampshire’s Birds

Photo credit: Len Medlock

Birds face a diverse and changing list of threats over the course of their lives, here grouped into six broad categories. Any of these threats can operate at any time of year, although some are certainly more seasonal than others. And for migratory species, threats have impacts across the entire migratory route, from breeding habitat, along the paths taken north and south in spring and fall, and on distant wintering grounds when birds are often very far away from where they nest.

Explore Threats

Habitat Loss




Climate Change


Information for the species profiles on this website was compiled from a combination of the sources listed below.

  • The Birds of New Hampshire. By Allan R. Keith and Robert B. Fox. 2013. Memoirs of the Nuttall Ornithological club No. 19.

  • Atlas of the Breeding Birds of New Hampshire. Carol R. Foss, ed. 1994. Arcadia Publishing Company and Audubon Society of New Hampshire

  • Birds of the World. Various authors and dates. Cornell Laboratory of Ornithology.

  • Data from the Breeding Bird Survey

  • Data from the Christmas Bird Count