Annual index results for Saskatchewan (Boreal Taiga Plains (BCR 6))

Annual index graph for: Bobolink

Note: the range of the vertical axis has been scaled to highlight pattern in the annual indices. If estimates are imprecise, the graph may not include the upper credible limits.

View definitions of the annual index table columns.

Annual indices for Bobolink in Saskatchewan (Boreal Taiga Plains (BCR 6))
Year Annual index Lower limit Upper limit
1970 1.56 0.0922 20.2
1971 1.34 0.0994 16.2
1972 2.07 0.363 15
1973 0.354 0.0296 1.96
1974 1.3 0.292 6.62
1975 1.23 0.319 5.79
1976 1.56 0.321 12.1
1977 0.66 0.148 2.96
1978 0.365 0.0764 1.36
1979 1.23 0.311 5.88
1980 0.214 0.0175 0.941
1981 0.332 0.0519 1.31
1982 0.57 0.171 2.28
1983 0.933 0.192 5.18
1984 0.393 0.0895 1.77
1985 0.235 0.0517 0.864
1986 0.128 0.0122 0.563
1987 0.135 0.0107 0.657
1988 0.464 0.103 2.5
1989 0.244 0.0569 1.41
1990 0.0885 0.00814 0.399
1991 0.111 0.02 0.443
1992 0.221 0.0517 1.07
1993 0.0727 0.00723 0.356
1994 0.0595 0.00489 0.259
1995 0.0595 0.0054 0.263
1996 0.0603 0.00509 0.276
1997 0.157 0.0344 1.09
1998 0.0471 0.00378 0.2
1999 0.0375 0.00357 0.151
2000 0.0747 0.0162 0.32
2001 0.0369 0.00335 0.156
2002 0.0408 0.00346 0.18
2003 0.04 0.00349 0.186
2004 0.0393 0.00367 0.185
2005 0.0378 0.00294 0.177
2006 0.0423 0.00369 0.211
2007 0.0402 0.00306 0.202
2008 0.0631 0.014 0.247
2009 0.0421 0.00351 0.222
2010 0.0666 0.011 0.396
2011 0.0408 0.00308 0.227
2012 0.042 0.00309 0.23
2013 0.0447 0.00315 0.278
2014 0.0456 0.00342 0.292
2015 0.0837 0.0112 0.542
2016 0.187 0.0311 1.65
2017 0.0762 0.00842 0.464
2018 0.0524 0.0022 0.461
2019 0.0593 0.00233 0.561

Geographic area included in the Long-term trend for the Bobolink

Map displaying regions covered by analysis of species: Bobolink
      Coloured = Regions (analytical strata) included in trend estimate. The colour of the region reflects the approximate population trend in the region. The categories of trends based on the %/year values are indicated in the legend on the right, and the specific values can be found by searching on the analytical stratum trends for the same time-period and species.
      White = Regions not included in trend estimate

Bird Conservation Regions (BCR) with data included in Long-term trend estimates for Saskatchewan (Boreal Taiga Plains (BCR 6))

Bird Conservation Regions (BCR) with data excluded from long-term trend estimates for Saskatchewan (Boreal Taiga Plains (BCR 6)), but included in short-term estimates

This web site may be cited as: Smith, A.C., Hudson, M-A.R. Aponte, V.I., and Francis, C.M. 2020. North American Breeding Bird Survey - Canadian Trends Website, Data-version 2019. Environment and Climate Change Canada, Gatineau, Quebec, K1A 0H3

Any use of these BBS results for Canada should acknowledge the hundreds of skilled volunteers in Canada who have participated in the BBS over the years and those who have served as provincial or territorial coordinators for the BBS.

  1. Smith, A. C., & Edwards, B. P. M. (2020). North American Breeding Bird Survey status and trend estimates to inform a wide range of conservation needs, using a flexible Bayesian hierarchical generalized additive model. The Condor, duaa065. https://doi.org/10.1093/ornithapp/duaa065
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