BREEDING BIRD SPECIES TRENDS
Below are the BCN Survey population trends of breeding birds of the Chicago Region between 1999 and 2012.
Click on a species' name below to view an individual species page with additional details. Hover over any of the fields of data to pull up a pop-up box with an explanation of the field. You can read more about the analysis methods here.
Grassland | Shrubland | Woodland | Wetland | Urban/Introduced