Migration & timing

Double-crested Cormorant in Colorado

In Colorado, Double-crested Cormorant is typically seen from early May through early October, peaking around late May.

Sighting 22 observations in Colorado

Its year in Colorado

Share of Double-crested Cormorant observations by week. Hover a bar for the date.

early January

mid January

late January

early February

mid February

late February

early March

mid March

late March

early April

mid April

late April

early May

mid May

late May

early June

mid June

late June

early July

mid July

late July

early August

mid August

late August

early September

mid September

late September

early October

mid October

late October

early November

mid November

late November

early December

mid December

late December

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

First seen: early May
Peak: late May
Last seen: early October

Common questions

When is the best time to see Double-crested Cormorant in Colorado?

The peak of observations is around late May.

When does Double-crested Cormorant arrive and leave Colorado?

Sightings begin around early May and taper off by early October.

Double-crested Cormorant elsewhere

More birds in Colorado

Data: iNaturalist research-grade observations (CC0 / CC-BY), via GBIF. Excludes eBird.