Great Blue Heron

The Great Blue Heron is a locally common statewide breeder. Breeding habitat usually consists of isolated stands of trees (living or dead) on islands or in undisturbed open areas near water. This species has increased noticeably during the past twenty years, but marshland species and heron rookeries are poorly monitored by the BCN Survey. Photo: © Eric Secker

Great Blue Heron
TREND: Strong increase
Annual Change
10%
Pct. Error
+/-4%
Conservation Status
Credibility
Good
# Points Seen At
257
Records
830
Frequency
14%
Great Blue Heron Graph

YEAR

Model Technical Details
Goodeness of Fit:PASSES
Chi-sq. p =0
THE 2013 TRENDS ANALYSIS IS A PROJECT BY:
Bird Conservation Network

PRINT BROCHURES: Funded by the Illinois Department of Natural Resources from contributions to the Illinois Wildlife Preservation Fund