Change in bird wintering ranges (1966-2013)
Annual change in latitude of bird center of abundance for 305 widespread species in North America. Upper + lower confidence intervals in grey.
DATASOURCE: Audubon Society/EPA.
WIDGET: factgraphs.org
Annual change in latitude of bird center of abundance for 305 widespread species in North America. Upper + lower confidence intervals in grey.
DATASOURCE: Audubon Society/EPA.
WIDGET: factgraphs.org