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Wildlife in Gateway Arch National Park

Here’s what naturalists are spotting in Gateway Arch right now - pulled live from recent research-grade observations. Browse by group, explore the map, and identify what you find with Huck.

2,878
recent observations
30
species listed
24
birds
4
insects & arthropods
2
mammals

Naturalists have logged 2,878 research-grade observations across the 30 most-recorded species in Gateway Arch. The most frequently seen is the American Robin, with 301 recorded sightings.

Birds account for the largest share of what gets recorded there (24 of the species listed here), followed by insects & arthropods (4).

🖨️ Printable wildlife checklist

Most-observed species in Gateway Arch

American Robin
Turdus migratorius
301 observations
White-throated Sparrow
Zonotrichia albicollis
289 observations
Ovenbird
Seiurus aurocapilla
286 observations
Tennessee Warbler
Leiothlypis peregrina
153 observations
Common Yellowthroat
Geothlypis trichas
132 observations
Eastern Gray Squirrel
Sciurus carolinensis
123 observations
Canada Goose
Branta canadensis
120 observations
Western Honey Bee
Apis mellifera
119 observations
Red-winged Blackbird
Agelaius phoeniceus
115 observations
Rock Pigeon
Columba livia
107 observations
Indigo Bunting
Passerina cyanea
97 observations
Mallard
Anas platyrhynchos
77 observations
Northern Waterthrush
Parkesia noveboracensis
75 observations
Black-and-white Warbler
Mniotilta varia
69 observations
House Sparrow
Passer domesticus
66 observations
Yellow-bellied Sapsucker
Sphyrapicus varius
62 observations
Northern Cardinal
Cardinalis cardinalis
59 observations
Mourning Dove
Zenaida macroura
58 observations
European Starling
Sturnus vulgaris
57 observations
Swamp Sparrow
Melospiza georgiana
55 observations
Asian Lady Beetle
Harmonia axyridis
55 observations
Monarch
Danaus plexippus
54 observations
Nashville Warbler
Leiothlypis ruficapilla
54 observations
Ruby-throated Hummingbird
Archilochus colubris
52 observations
Common Grackle
Quiscalus quiscula
48 observations
Gray Catbird
Dumetella carolinensis
43 observations
Common Eastern Bumble Bee
Bombus impatiens
41 observations
Eastern Cottontail
Sylvilagus floridanus
39 observations
Magnolia Warbler
Setophaga magnolia
37 observations
Rose-breasted Grosbeak
Pheucticus ludovicianus
35 observations

Built from recent research-grade iNaturalist observations. Identifications are community-sourced and may occasionally be wrong, and the ranking reflects where people record and photograph wildlife, so a species seen often here is not necessarily rare elsewhere. Some plants and animals are only out in certain seasons. Treat this as a lively snapshot of what people are finding, not a formal checklist.

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