Trend results for Bank Swallow

A comprehensive assessment of this species' status is available, on the Status of Birds in Canada web site, or for waterfowl, in the most recent report on the Migratory game bird hunting.

Trend results can be filtered by selecting a new time period.


View definitions of the trend results table columns.

Select a geographic area name in the first column to view graphs of annual indices and maps of the regions included in the analysis. Use the scroll bar to view additional columns.

Long-term trend estimates for Bank Swallow in all regions of Canada
Geographic area Time period Annual trend Limits Overall reliability N routes Reliability details Probability of decrease Probability of increase Population change Population change - lower limit Population change - upper limit Probability of population change during time period
Lower Upper Geographic coverage Local data weight Precision >50% decrease 25%-50% decrease 0%-25% decrease 0%-33% increase 33%-100% increase >100% increase
Canada; Long-term 1970-2019 -5.29 -8 -3.39 Medium 576 0.557 0.868 4.61 1 0 -93 -98.3 -81.5 0.999 0.001 0 0 0 0
Alberta; Long-term 1970-2019 -4.5 -9.82 -1.3 Low 93 0.615 1 8.52 0.999 0.001 -89.5 -99.4 -47.4 0.972 0.022 0.005 0.001 0 0
British Columbia; Long-term 1970-2019 -4.49 -7.18 -1.68 Medium 50 0.456 0.971 5.49 0.999 0.001 -89.5 -97.4 -56.5 0.982 0.013 0.004 0.001 0 0
Manitoba; Long-term 1970-2019 -3.36 -6.36 -0.979 Medium 48 0.601 1 5.39 0.996 0.004 -81.3 -96 -38.3 0.947 0.041 0.008 0.003 0.001 0
New Brunswick; Long-term 1970-2019 -10.1 -12.4 -7.82 Medium 33 0.985 1 4.6 1 0 -99.5 -99.8 -98.2 1 0 0 0 0 0
Newfoundland and Labrador; Long-term 1970-2019 -3.32 -10.9 4.72 Low 7 0.301 0.82 15.6 0.783 0.217 -80.9 -99.6 859 0.675 0.069 0.039 0.042 0.048 0.126
Northwest Territories; Long-term 1970-2019 -1.69 -11.1 7.98 Low 6 0.248 0.6 19.1 0.634 0.366 -56.6 -99.7 4190 0.519 0.065 0.05 0.049 0.057 0.26
Nova Scotia and Prince Edward Island; Long-term 1970-2019 -8.63 -10.9 -6.6 Medium 31 0.98 1 4.34 1 0 -98.8 -99.7 -96.5 1 0 0 0 0 0
Ontario; Long-term 1970-2019 -6.57 -9.07 -4.88 Medium 113 0.709 1 4.19 1 0 -96.4 -99.1 -91.4 1 0 0 0 0 0
Québec; Long-term 1970-2019 -9.49 -11.8 -6.57 Medium 102 0.418 1 5.24 1 0 -99.2 -99.8 -96.4 1 0 0 0 0 0
Saskatchewan; Long-term 1970-2019 1.99 -0.539 4.17 Medium 61 0.61 0.959 4.71 0.062 0.938 162 -23.3 641 0.004 0.017 0.04 0.079 0.199 0.661
Yukon; Long-term 1970-2019 -7.51 -12.2 -2.51 Low 28 0.268 1 9.71 0.999 0.001 -97.8 -99.8 -71.2 0.992 0.005 0.002 0.001 0 0
Northwestern Interior Forest (BCR 4); Long-term 1970-2019 -7.51 -12.2 -2.51 Low 28 0.268 1 9.71 0.999 0.001 -97.8 -99.8 -71.2 0.992 0.005 0.002 0.001 0 0
Northern Pacific Rainforest (BCR 5); Long-term 1970-2019 -3.96 -11.7 4.8 Low 4 1 0.86 16.6 0.819 0.181 -86.2 -99.8 897 0.73 0.052 0.037 0.031 0.044 0.105
Boreal Taiga Plains (BCR 6); Long-term 1970-2019 -2.39 -8.62 1.94 Low 63 0.262 0.835 10.6 0.87 0.13 -69.5 -98.8 157 0.678 0.119 0.073 0.047 0.043 0.04
Taiga Shield and Hudson Plains (BCR 7); Long-term 1970-2019 -2.17 -11.8 8.19 Low 4 0.44 20 0.658 0.342 -65.8 -99.8 4630 0.554 0.059 0.044 0.039 0.054 0.249
Boreal Softwood Shield (BCR 8); Long-term 1970-2019 -6.78 -10.8 -2.45 Low 34 0.131 0.98 8.32 0.998 0.002 -96.8 -99.6 -70.4 0.991 0.005 0.002 0.001 0 0.001
Great Basin (BCR 9); Long-term 1970-2019 -5.77 -9.43 -2.11 Low 16 0.804 1 7.32 0.998 0.002 -94.6 -99.2 -64.8 0.991 0.004 0.002 0.001 0.001 0.001
Northern Rockies (BCR 10); Long-term 1970-2019 -5.36 -10 -2.08 Low 34 0.47 1 7.97 0.999 0.001 -93.3 -99.4 -64.3 0.991 0.007 0.001 0.001 0.001 0
Prairie Potholes (BCR 11); Long-term 1970-2019 0.484 -1.49 2.55 Medium 135 0.774 1 4.04 0.326 0.674 26.7 -52 243 0.032 0.11 0.184 0.219 0.269 0.186
Boreal Hardwood Transition (BCR 12); Long-term 1970-2019 -10.5 -13 -7.5 Medium 80 0.527 1 5.53 1 0 -99.6 -99.9 -97.8 1 0 0 0 0 0
Lower Great Lakes / St. Lawrence Plain (BCR 13); Long-term 1970-2019 -6.52 -7.98 -4.95 High 81 0.964 1 3.03 1 0 -96.3 -98.3 -91.7 1 0 0 0 0 0
Atlantic Northern Forest (BCR 14); Long-term 1970-2019 -10 -12.3 -8.17 Medium 97 0.921 1 4.12 1 0 -99.4 -99.8 -98.5 1 0 0 0 0 0
Canada (Taiga Shield and Hudson Plains (BCR 7)); Long-term 1970-2019 -2.17 -11.8 8.19 Low 4 0.44 20 0.658 0.342 -65.8 -99.8 4630 0.554 0.059 0.044 0.039 0.054 0.249
Alberta (Boreal Taiga Plains (BCR 6)); Long-term 1970-2019 1.12 -3.46 5.91 Low 27 0.273 1 9.36 0.313 0.687 72.6 -82.2 1560 0.138 0.096 0.079 0.09 0.15 0.447
Alberta (Northern Rockies (BCR 10)); Long-term 1970-2019 -9.16 -15.8 -2.65 Low 7 0.481 1 13.1 0.998 0.002 -99.1 -100 -73.2 0.99 0.005 0.002 0.001 0.001 0
Alberta (Prairie Potholes (BCR 11)); Long-term 1970-2019 -3.41 -5.79 -0.596 Medium 59 0.84 1 5.19 0.99 0.01 -81.8 -94.6 -25.4 0.923 0.052 0.015 0.006 0.004 0
British Columbia (Northern Pacific Rainforest (BCR 5)); Long-term 1970-2019 -3.96 -11.7 4.8 Low 4 1 0.86 16.6 0.819 0.181 -86.2 -99.8 897 0.73 0.052 0.037 0.031 0.044 0.105
British Columbia (Boreal Taiga Plains (BCR 6)); Long-term 1970-2019 -9.05 -17.1 -0.251 Low 3 0.008 0.86 16.9 0.978 0.022 -99 -100 -11.6 0.958 0.012 0.008 0.007 0.006 0.009
British Columbia (Great Basin (BCR 9)); Long-term 1970-2019 -5.77 -9.43 -2.11 Low 16 0.804 1 7.32 0.998 0.002 -94.6 -99.2 -64.8 0.991 0.004 0.002 0.001 0.001 0.001
British Columbia (Northern Rockies (BCR 10)); Long-term 1970-2019 -4.25 -7.33 -0.959 Medium 27 0.471 1 6.37 0.994 0.006 -88.1 -97.6 -37.6 0.955 0.028 0.011 0.004 0.002 0.001
Manitoba (Boreal Taiga Plains (BCR 6)); Long-term 1970-2019 -3.28 -6.59 0.056 Medium 13 0.36 1 6.65 0.972 0.028 -80.5 -96.5 2.76 0.872 0.074 0.026 0.014 0.009 0.004
Manitoba (Prairie Potholes (BCR 11)); Long-term 1970-2019 -1.94 -4.95 1.08 Medium 29 0.864 1 6.03 0.887 0.113 -61.8 -91.7 69.4 0.633 0.169 0.084 0.057 0.044 0.013
Manitoba (Boreal Hardwood Transition (BCR 12)); Long-term 1970-2019 -5.05 -11.1 1.45 Low 6 0.568 1 12.6 0.937 0.063 -92.1 -99.7 102 0.868 0.047 0.022 0.019 0.018 0.026
New Brunswick (Atlantic Northern Forest (BCR 14)); Long-term 1970-2019 -10.1 -12.4 -7.82 Medium 33 0.985 1 4.6 1 0 -99.5 -99.8 -98.2 1 0 0 0 0 0
Newfoundland and Labrador (Boreal Softwood Shield (BCR 8)); Long-term 1970-2019 -3.32 -10.9 4.72 Low 7 0.301 0.82 15.6 0.783 0.217 -80.9 -99.6 859 0.675 0.069 0.039 0.042 0.048 0.126
Northwest Territories (Boreal Taiga Plains (BCR 6)); Long-term 1970-2019 -1.69 -11.1 7.98 Low 6 0.248 0.6 19.1 0.634 0.366 -56.6 -99.7 4190 0.519 0.065 0.05 0.049 0.057 0.26
Ontario (Boreal Softwood Shield (BCR 8)); Long-term 1970-2019 -14.2 -20.9 -8.22 Low 12 0.19 1 12.6 1 0 -99.9 -100 -98.5 1 0 0 0 0 0
Ontario (Boreal Hardwood Transition (BCR 12)); Long-term 1970-2019 -9.55 -12.1 -7.04 Medium 41 0.625 1 5.08 1 0 -99.3 -99.8 -97.2 1 0 0 0 0 0
Ontario (Lower Great Lakes / St. Lawrence Plain (BCR 13)); Long-term 1970-2019 -4.99 -6.63 -3.32 High 60 0.966 1 3.31 1 0 -91.9 -96.5 -80.8 1 0 0 0 0 0
Québec (Boreal Softwood Shield (BCR 8)); Long-term 1970-2019 -6.03 -10.9 -1.14 Low 15 0.112 1 9.79 0.991 0.009 -95.3 -99.7 -42.9 0.967 0.018 0.007 0.004 0.003 0.002
Québec (Boreal Hardwood Transition (BCR 12)); Long-term 1970-2019 -12.8 -15.7 -10 Medium 33 0.469 1 5.69 1 0 -99.9 -100 -99.4 1 0 0 0 0 0
Québec (Lower Great Lakes / St. Lawrence Plain (BCR 13)); Long-term 1970-2019 -9.27 -11.6 -6.68 Medium 21 0.957 1 4.95 1 0 -99.2 -99.8 -96.6 1 0 0 0 0 0
Québec (Atlantic Northern Forest (BCR 14)); Long-term 1970-2019 -10.8 -13.7 -7.59 Medium 33 0.741 1 6.16 1 0 -99.6 -99.9 -97.9 1 0 0 0 0 0
Saskatchewan (Boreal Taiga Plains (BCR 6)); Long-term 1970-2019 -1.04 -7.92 6.09 Low 14 0.308 0.88 14 0.618 0.382 -40.2 -98.2 1710 0.464 0.088 0.066 0.056 0.082 0.244
Saskatchewan (Prairie Potholes (BCR 11)); Long-term 1970-2019 2.14 -0.413 4.4 Medium 47 0.669 1 4.82 0.055 0.945 182 -18.4 726 0.003 0.017 0.035 0.067 0.187 0.692
Yukon (Northwestern Interior Forest (BCR 4)); Long-term 1970-2019 -7.51 -12.2 -2.51 Low 28 0.268 1 9.71 0.999 0.001 -97.8 -99.8 -71.2 0.992 0.005 0.002 0.001 0 0
Nova Scotia and Prince Edward Island (Atlantic Northern Forest (BCR 14)); Long-term 1970-2019 -8.63 -10.9 -6.6 Medium 31 0.98 1 4.34 1 0 -98.8 -99.7 -96.5 1 0 0 0 0 0

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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