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Hawaiian forest bird trends: using log-linear models to assess long-term trends is supported by model diagnostics and assumptions (reply to Freed and Cann 2013)

June 9, 2014

Freed and Cann (2013) criticized our use of linear models to assess trends in the status of Hawaiian forest birds through time (Camp et al. 2009a, 2009b, 2010) by questioning our sampling scheme, whether we met model assumptions, and whether we ignored short-term changes in the population time series. In the present paper, we address these concerns and reiterate that our results do not support the position of Freed and Cann (2013) that the forest birds in the Hakalau Forest National Wildlife Refuge (NWR) are declining, or that the federally listed endangered birds are showing signs of imminent collapse. On the contrary, our data indicate that the 21-year long-term trends for native birds in Hakalau Forest NWR are stable to increasing, especially in areas that have received active management.

Publication Year 2014
Title Hawaiian forest bird trends: using log-linear models to assess long-term trends is supported by model diagnostics and assumptions (reply to Freed and Cann 2013)
DOI 10.1650/CONDOR-13-089.1
Authors Richard J. Camp, Thane K. Pratt, P. Marcos Gorresen, Bethany L. Woodworth, John J. Jeffrey
Publication Type Article
Publication Subtype Journal Article
Series Title Condor
Index ID 70111747
Record Source USGS Publications Warehouse
USGS Organization Pacific Island Ecosystems Research Center