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 0.13 0.0149 1.2
1971 0.137 0.0193 0.999
1972 0.144 0.0249 0.856
1973 0.147 0.031 0.741
1974 0.147 0.0377 0.653
1975 0.146 0.0413 0.553
1976 0.144 0.0476 0.475
1977 0.145 0.0539 0.417
1978 0.147 0.0605 0.395
1979 0.15 0.0685 0.361
1980 0.151 0.0732 0.326
1981 0.154 0.0782 0.321
1982 0.161 0.0874 0.344
1983 0.149 0.0814 0.29
1984 0.139 0.0757 0.277
1985 0.127 0.0654 0.247
1986 0.118 0.0606 0.232
1987 0.108 0.0533 0.216
1988 0.0997 0.0472 0.197
1989 0.0941 0.0442 0.189
1990 0.0887 0.0416 0.182
1991 0.0838 0.0385 0.178
1992 0.0805 0.037 0.176
1993 0.079 0.0352 0.172
1994 0.0774 0.0346 0.175
1995 0.075 0.0334 0.167
1996 0.073 0.0327 0.168
1997 0.0706 0.0302 0.159
1998 0.0659 0.0293 0.157
1999 0.0605 0.0254 0.138
2000 0.0578 0.0248 0.136
2001 0.0564 0.0243 0.135
2002 0.0544 0.0231 0.134
2003 0.0532 0.0219 0.133
2004 0.0516 0.0223 0.131
2005 0.0495 0.0209 0.127
2006 0.046 0.0195 0.119
2007 0.0437 0.0183 0.114
2008 0.0407 0.0165 0.11
2009 0.04 0.0163 0.111
2010 0.0357 0.0136 0.101
2011 0.0341 0.0129 0.0976
2012 0.0306 0.0111 0.0912
2013 0.0288 0.00989 0.09
2014 0.0252 0.008 0.0795
2015 0.0232 0.00695 0.0789
2016 0.0202 0.00525 0.0762
2017 0.0182 0.00435 0.0746
2018 0.0155 0.00313 0.0695
2019 0.0134 0.00238 0.0662

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

Bird Conservation Regions (BCR) with data excluded from long-term trend estimates for Newfoundland and Labrador, 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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