WhenToBird

Nannopterum auritum · Phalacrocoracidae

Double-crested Cormorant: When and Where to See It

Adult Double-crested Cormorant
Photo: jubileej, CC0 1.0 via iNaturalist

The Double-crested Cormorant reaches Washington first, around early September, and Florida last, around early November.

JanFebMarAprMayJunJulAugSepOctNovDec
today
Second week of November

Each county is shaded by the share of complete checklists there that listed the bird, blended with the weeks either side. Darker is more often. It follows where people watch birds, not how many birds there are. How to read it.

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0%5%10%15%20%Jan 1-7: 11% of 1114036 checklistsJan 8-14: 11% of 824708 checklistsJan 15-21: 11% of 825978 checklistsJan 22-31: 11% of 1105853 checklistsFeb 1-7: 10% of 779772 checklistsFeb 8-14: 9.3% of 864504 checklistsFeb 15-21: 8.3% of 1127933 checklistsFeb 22-28: 10% of 840124 checklistsMar 1-7: 10% of 839610 checklistsMar 8-14: 10% of 870138 checklistsMar 15-21: 11% of 898456 checklistsMar 22-31: 12% of 1335637 checklistsApr 1-7: 13% of 1030617 checklistsApr 8-14: 14% of 1124024 checklistsApr 15-21: 13% of 1194575 checklistsApr 22-30: 12% of 1675723 checklistsMay 1-7: 12% of 1449080 checklistsMay 8-14: 11% of 1538353 checklistsMay 15-21: 11% of 1219898 checklistsMay 22-31: 9.9% of 1452282 checklistsJun 1-7: 8.8% of 900636 checklistsJun 8-14: 8.3% of 829907 checklistsJun 15-21: 8.4% of 773255 checklistsJun 22-30: 8.5% of 916255 checklistsJul 1-7: 9.1% of 717733 checklistsJul 8-14: 9.9% of 658223 checklistsJul 15-21: 11% of 638752 checklistsJul 22-31: 12% of 895727 checklistsAug 1-7: 13% of 655651 checklistsAug 8-14: 14% of 650038 checklistsAug 15-21: 15% of 654639 checklistsAug 22-31: 15% of 974928 checklistsSep 1-7: 15% of 765914 checklistsSep 8-14: 15% of 738674 checklistsSep 15-21: 15% of 750433 checklistsSep 22-30: 15% of 944196 checklistsOct 1-7: 15% of 760106 checklistsOct 8-14: 15% of 793131 checklistsOct 15-21: 15% of 728727 checklistsOct 22-31: 16% of 959954 checklistsNov 1-7: 15% of 709464 checklistsNov 8-14: 15% of 693424 checklistsNov 15-21: 14% of 653952 checklistsNov 22-30: 13% of 871137 checklistsDec 1-7: 12% of 627591 checklistsDec 8-14: 11% of 642427 checklistsDec 15-21: 9.9% of 775638 checklistsDec 22-31: 11% of 1132751 checklistsJanFebMarAprMayJunJulAugSepOctNovDec
Share of complete checklists reporting it, by week (4 per month). Grey bars: fewer than 10 checklists, not counted.

Pooled across every state in the data, so it leans toward states with the most birders.

States, in order of first arrivals

StatePatternFirst arrivalsPeakMost gone byPeak %
UtahSummer visitorJan 1-7Apr 8-14Nov 8-1412%
OhioSummer visitorFeb 22-28Sep 1-7Nov 15-2124%
ColoradoSummer visitorFeb 22-28Apr 22-30Nov 1-720%
IndianaSummer visitorFeb 22-28Sep 1-7Nov 22-3017%
KentuckySummer visitorFeb 22-28Aug 22-31Dec 1-712%
IllinoisSummer visitorMar 1-7Aug 8-14Nov 8-1421%
NebraskaSummer visitorMar 1-7Apr 8-14Nov 22-3018%
VirginiaAll year, most in springMar 1-7Apr 1-7Apr 22-3018%
Rhode IslandSummer visitorMar 8-14Aug 1-7Dec 1-751%
PennsylvaniaSummer visitorMar 8-14Apr 8-14Nov 22-3012%
MassachusettsSummer visitorMar 15-21Aug 8-14Nov 15-2131%
ConnecticutSummer visitorMar 15-21Aug 22-31Nov 15-2125%
MarylandAll year, most in springMar 15-21Apr 8-14May 1-719%
South DakotaSummer visitorMar 15-21Apr 15-21Nov 15-2116%
MichiganSummer visitorMar 15-21Sep 1-7Nov 1-715%
MinnesotaSummer visitorMar 15-21Aug 22-31Oct 15-2115%
MontanaSummer visitorMar 15-21Aug 22-31Oct 15-2111%
VermontSummer visitorMar 15-21Sep 1-7Nov 8-1410%
New HampshireSummer visitorMar 22-31Aug 22-31Nov 8-1418%
WisconsinSummer visitorMar 22-31Sep 8-14Nov 1-712%
WyomingSummer visitorMar 22-31Apr 22-30Oct 15-218.2%
MaineSummer visitorApr 1-7Sep 8-14Nov 8-1437%
TennesseeAll year, most in fallJun 15-21Aug 22-31Nov 15-2116%
West VirginiaSummer visitorJul 1-7Apr 8-14May 22-315.3%
New YorkAll year, most in fallJul 8-14Aug 22-31Nov 15-2124%
IdahoAll year, most in fallJul 8-14Sep 15-21Oct 22-3113%
New JerseyAll year, most in fallJul 15-21Oct 15-21Nov 15-2129%
DelawareAll year, most in fallJul 15-21Oct 15-21Nov 22-3025%
OklahomaAll year, most in winterOct 1-7Nov 8-14Feb 1-727%
MississippiAll year, most in winterOct 8-14Jan 8-14Apr 1-726%
North CarolinaAll year, most in winterOct 8-14Mar 8-14Apr 15-2119%
ArizonaAll year, most in winterOct 8-14Jan 22-31Mar 22-317.4%
LouisianaAll year, most in winterOct 15-21Jan 22-31Apr 1-725%
South CarolinaAll year, most in winterOct 15-21Jan 1-7Apr 8-1425%
AlabamaAll year, most in winterOct 15-21Nov 15-21Apr 8-1420%
GeorgiaAll year, most in winterOct 22-31Nov 15-21Apr 8-1414%
FloridaAll year, most in winterNov 1-7Jan 8-14Apr 8-1432%
MissouriWinter visitorFeb 15-21Oct 15-21Dec 8-149.4%
IowaWinter visitorMar 8-14Oct 22-31Dec 1-716%
North DakotaWinter visitorApr 1-7Oct 1-7Nov 1-716%
AlaskaWinter visitorJun 8-14Dec 8-14May 1-73.8%
ArkansasWinter visitorJul 8-14Nov 8-14Apr 15-2113%
KansasWinter visitorJul 15-21Oct 22-31Dec 15-2118%
TexasWinter visitorJul 22-31Jan 1-7Apr 8-1418%
WashingtonAll year, most in winterSep 1-7Nov 15-21Apr 1-726%
OregonAll year, most in fallSep 1-7Nov 8-14Feb 1-717%
District of ColumbiaYear-round–Dec 1-7–33%
CaliforniaYear-round–Nov 22-30–23%
NevadaYear-round–Mar 22-31–15%
New MexicoYear-round–Oct 1-7–2.4%

Winter visitor in: North Carolina, Arizona, Louisiana, Missouri, Iowa, North Dakota, Alaska, Arkansas, Kansas, Texas

Passes through: Virginia, Maryland

Summer visitor in: Utah, Colorado, Nebraska, Rhode Island, Pennsylvania, South Dakota, Wyoming, West Virginia, Ohio, Indiana, Kentucky, Illinois, Massachusetts, Connecticut, Michigan, Minnesota, Montana, Vermont, New Hampshire, Wisconsin, Maine, Tennessee, New York, Idaho, New Jersey, Delaware