Global Short Term Trend: Relatively stable (=10% change)
Comments: Three generations likely is about 10 years, and there is no evidence of a significant range-wide decline over the past 10 years.
Global Long Term Trend: Increase of 10-25% to decline of 30%
Comments: Breeding Bird Survey (BBS) data for 1966-2007 indicate a range-wide decline of 1.0% per year, but the trend is not statistically significant.
Range of "western flycatcher" may have expanded eastward and northward in British Columbia since the mid-1940s (Campbell et al. 1997).