Great Blue Heron

Great Blue Heron Ardea herodias

Abundance map

Great Blue Heron, Abundance map
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Data provided by eBird

Great Blue Heron

Ardea herodias

Abundance

This map depicts the seasonally-averaged estimated relative abundance, defined as the expected count on an eBird Traveling Count starting at the optimal time of day with the optimal search duration and distance that maximizes detection of that species in a region.  Learn more

Relative abundance
Year-round
0
0.6
27.43
Breeding season
May 10 - Jun 28
0
0.6
27.43
Non-breeding season
Dec 28 - Jan 25
0
0.6
27.43
Pre-breeding migratory season
Feb 1 - May 3
0
0.6
27.43
Post-breeding migratory season
Jul 6 - Dec 21
0
0.6
27.43
Note: Seasonal ranges overlap and are stacked in the order above; view full range in season maps.
Seasons timeline
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