Published 2026-06-11 · data 2019 · birds (1970 baseline, N. America)
Three billion birds gone since 1970
North American breeding birds collapsed — grassland and forest species led the loss. A continent-scale warning.
1 cell = 10 million birds (1970 baseline, N. America) (0.1% of breeding birds 1970) · 1,000 cells
Context
Rosenberg et al. Science 2019: ~3B fewer birds in US/Canada since 1970.
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Credit this grid as Inagrid — https://inagrid.com/e/2026-06-11-bird-population-loss