Annual index results for Newfoundland and Labrador

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 Newfoundland and Labrador
Year Annual index Lower limit Upper limit
1970 0.141 0.0218 0.359
1971 0.142 0.0188 0.346
1972 0.143 0.0286 0.35
1973 0.141 0.0233 0.34
1974 0.142 0.0191 0.322
1975 0.14 0.0223 0.315
1976 0.137 0.0324 0.297
1977 0.14 0.0302 0.309
1978 0.139 0.0364 0.303
1979 0.141 0.0357 0.289
1980 0.131 0.0468 0.235
1981 0.134 0.0525 0.247
1982 0.171 0.0771 0.312
1983 0.147 0.0504 0.283
1984 0.12 0.0443 0.211
1985 0.121 0.0349 0.23
1986 0.12 0.039 0.24
1987 0.102 0.0233 0.196
1988 0.0942 0.0218 0.175
1989 0.0894 0.0253 0.169
1990 0.0849 0.0244 0.163
1991 0.0831 0.0196 0.158
1992 0.0815 0.0175 0.153
1993 0.0794 0.0217 0.148
1994 0.0781 0.0211 0.156
1995 0.0731 0.0186 0.133
1996 0.0723 0.018 0.139
1997 0.0686 0.0164 0.131
1998 0.065 0.0165 0.129
1999 0.0541 0.0129 0.103
2000 0.0583 0.0152 0.115
2001 0.0556 0.0105 0.108
2002 0.0535 0.00963 0.103
2003 0.0508 0.00951 0.101
2004 0.0494 0.0101 0.0965
2005 0.0475 0.00932 0.089
2006 0.0438 0.0106 0.0831
2007 0.041 0.00981 0.0783
2008 0.0398 0.00836 0.0764
2009 0.0448 0.0112 0.0899
2010 0.0353 0.00815 0.0743
2011 0.0381 0.0092 0.0789
2012 0.0328 0.00764 0.0645
2013 0.0351 0.00716 0.0706
2014 0.0273 0.005 0.0573
2015 0.0284 0.00548 0.0599
2016 0.0243 0.00412 0.0512
2017 0.0258 0.00376 0.0537
2018 0.0221 0.00261 0.0449
2019 0.0207 0.00177 0.0435
2020 0.0211 0.00193 0.0454
2021 0.019 0.00201 0.0399

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 Newfoundland and Labrador

This web site may be cited as: Smith, A.C., Hudson, M-A.R. Aponte, V.I., English, W.B., and Francis, C.M. 2023. North American Breeding Bird Survey - Canadian Trends Website, Data-version 2021. 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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