Impact of red squirrel distributional shifts on resiliency of birds in the face of climate change

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Little is known about how shifting small mammal populations in response to climate change will affect the bird species that they predate.  This project is relying on historical sampling and 2014 field surveys and trapping to examine how red squirrel populations have shifted in the mountains of Vermont and New Hampshire and how birds may be affected by these shifts.

The results of this work allow agencies to target efforts towards at-risk target species and habitats. Preliminary results have shown that red squirrels have not shifted upslope, and songbird reproductive success is highly affected by red squirrel presence. 

  • Morelli et al. Response of American Red Squirrels (Tamiasciurus hudsonicus) to Climate Change in the Northeast. Northeast Natural History Conference, April 20, 2015.
  • Ralston et al. Climate Change and Vulnerable Spruce-Fir Bird Species in the Northeast. Northeast Natural History Conference, April 20, 2015.
  • Morelli, Toni Lyn. NE NHC 2015 meeting at US Fish & Wildlife Service Region 3 Headquarters in November 2015
  • Morelli, Toni Lyn.  The effects of climate change on wildlife - U.C. Davis, CA, February 2016.
  • Toni Lyn Morelli, William V. DeLuca, Timothy R. Duclos, Steve Faccio, Daniel Lambert, Joel Ralston, Judith Scarl, Keith H. Nislow, and Mary J. Ratnaswamy. 2017. Response of Red Squirrels (Tamiasciurus hudsonicus) to Climate Change in the Northeast Poster presented at ESA
  • NE CSC webinar April 5, 2017 "Using decision tools to assess vulnerability and inform management of wildlife in the Northeast"


Attached Files: 
PDF icon ESA Poster 2016.pdf