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Birds Seen in Delaware in September

60 species · iNaturalist data

60 birds were recorded seen in Delaware in September in our iNaturalist sample; 6 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.

Top birds in September

All birds seen in Delaware in September

#SpeciesScientific nameFamilyObs.Peak in state
1Laughing GullLeucophaeus atricillaGulls, Terns, and Skimmers228Aug (past peak)
2Great Blue HeronArdea herodiasHerons, Egrets, and Bitterns182May (past peak)
3Great EgretArdea albaHerons, Egrets, and Bitterns156Aug (past peak)
4Snowy EgretEgretta thulaHerons, Egrets, and Bitterns151Aug (past peak)
5Bald EagleHaliaeetus leucocephalusHawks, Eagles, and Kites137Apr (past peak)
6OspreyPandion haliaetusOspreys120Jul (past peak)
7Double-crested CormorantNannopterum auritumCormorants and Shags97Aug (past peak)
8SanderlingCalidris albaSandpipers and Allies92Aug (past peak)
9American RedstartSetophaga ruticillaNew World Warblers91Sep (peak)
10Ruby-throated HummingbirdArchilochus colubrisHummingbirds90Aug (past peak)
11American GoldfinchSpinus tristisFinches, Euphonias, and Allies86Apr (past peak)
12Common YellowthroatGeothlypis trichasNew World Warblers81May (past peak)
13American AvocetRecurvirostra americanaStilts and Avocets79Aug (past peak)
14Turkey VultureCathartes auraNew World Vultures76Apr (past peak)
15Red-tailed HawkButeo jamaicensisHawks, Eagles, and Kites76Jan (past peak)
16Green HeronButorides virescensHerons, Egrets, and Bitterns71Aug (past peak)
17Mourning DoveZenaida macrouraPigeons and Doves69Apr (past peak)
18Canada GooseBranta canadensisDucks, Geese, and Swans69May (past peak)
19Cooper's HawkAstur cooperiiHawks, Eagles, and Kites66Oct (rising)
20Broad-winged HawkButeo platypterusHawks, Eagles, and Kites65Sep (peak)
21Northern CardinalCardinalis cardinalisCardinals and Allies62Apr (past peak)
22Great Black-backed GullLarus marinusGulls, Terns, and Skimmers56Aug (past peak)
23Semipalmated PloverCharadrius semipalmatusPlovers and Lapwings56Aug (past peak)
24White IbisEudocimus albusIbises and Spoonbills55Aug (past peak)
25Forster's TernSterna forsteriGulls, Terns, and Skimmers55Aug (past peak)
26Black-and-white WarblerMniotilta variaNew World Warblers55Sep (peak)
27Mute SwanCygnus olorDucks, Geese, and Swans53May (past peak)
28MallardAnas platyrhynchosDucks, Geese, and Swans53May (past peak)
29Greater YellowlegsTringa melanoleucaSandpipers and Allies51Apr (past peak)
30Northern ParulaSetophaga americanaNew World Warblers51Sep (peak)
31Red-shouldered HawkButeo lineatusHawks, Eagles, and Kites50Jan (past peak)
32Blue GrosbeakPasserina caeruleaCardinals and Allies50May (past peak)
33Caspian TernHydroprogne caspiaGulls, Terns, and Skimmers50Aug (past peak)
34Blue JayCyanocitta cristataCrows, Jays, and Magpies49Apr (past peak)
35Gray CatbirdDumetella carolinensisMockingbirds and Thrashers47May (past peak)
36Red-eyed VireoVireo olivaceusVireos, Shrike-Babblers, and Erpornis47Sep (peak)
37American Herring GullLarus smithsonianusGulls, Terns, and Skimmers46Feb (past peak)
38Brown PelicanPelecanus occidentalisPelicans44Jul (past peak)
39Peregrine FalconFalco peregrinusFalcons and Caracaras44Oct (rising)
40Carolina ChickadeePoecile carolinensisTits, Chickadees, and Titmice44Apr (past peak)
41Wild TurkeyMeleagris gallopavoPheasants, Grouse, and Allies43Apr (past peak)
42Northern HarrierCircus hudsoniusHawks, Eagles, and Kites43Dec (rising)
43Northern MockingbirdMimus polyglottosMockingbirds and Thrashers42Apr (past peak)
44Carolina WrenThryothorus ludovicianusWrens41May (past peak)
45Black-bellied PloverPluvialis squatarolaPlovers and Lapwings38May (past peak)
46Royal TernThalasseus maximusGulls, Terns, and Skimmers38Aug (past peak)
47Roseate SpoonbillPlatalea ajajaIbises and Spoonbills37Sep (peak)
48Downy WoodpeckerDryobates pubescensWoodpeckers37Feb (past peak)
49Lesser Black-backed GullLarus fuscusGulls, Terns, and Skimmers36Oct (rising)
50House FinchHaemorhous mexicanusFinches, Euphonias, and Allies36May (past peak)