Trends in Canada's bird population...

 Prepared by Government of Canada

From 1970 70 2022 ( 52 years)

Birds are sensitive to environmental changes, such as habitat loss and pollution, so the health of birds populations can be used as an indicator of ecosystem health.   While bird populations fluctuate naturally, rapid declines can signal the need for urgent conservation action.   These indicator track changes in the population trends of various groups using native Canadian bird species that are representative of their ecological groups.

KEY RESULTS

From 1970 to 2022, the trends in bird species groups varied:

1. The following groups experienced an increase: waterfowl (by 46%), birds          of prey (by 35%) and wetland birds (by 21%).

2. The following groups experienced a decrease: grassland birds (by 67%),          aerial insectivores (by 43%), shorebirds (by 42%, long-distance migrants          (by 29%), and Arctic birds (by 28%).

3. Marine and forest birds showed little change overall (less than 1%).

Go online to Trends in Canada's bird populations to see how these indicators were calculated. (13 pages).

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BarrytheBirder