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Wildlife in Arnold Arboretum of Harvard University

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

10,624
recent observations
30
species listed
10
birds
4
mammals
11
plants

Naturalists have logged 10,624 research-grade observations across the 30 most-recorded species in Arnold Arboretum. The most frequently seen is the Eastern Cottontail, with 1,244 recorded sightings.

Birds account for the largest share of what gets recorded there (10 of the species listed here), followed by mammals (4).

🖨️ Printable wildlife checklist📋 Printable field sheet

Most-observed species in Arnold Arboretum

Eastern Cottontail
Sylvilagus floridanus
1,244 observations
American Robin
Turdus migratorius
1,087 observations
Eastern Gray Squirrel
Sciurus carolinensis
1,072 observations
Common Eastern Bumble Bee
Bombus impatiens
675 observations
Western Honey Bee
Apis mellifera
562 observations
Wild Turkey
Meleagris gallopavo
452 observations
Garlic Mustard
Alliaria petiolata
391 observations
Lesser Celandine
Ficaria verna
335 observations · iNaturalist
Mallard
Anas platyrhynchos
297 observations
Mourning Dove
Zenaida macroura
294 observations
Red-tailed Hawk
Buteo jamaicensis
282 observations
Asian Lady Beetle
Harmonia axyridis
274 observations
Japanese Knotweed
Reynoutria japonica
270 observations
Canada Goose
Branta canadensis
246 observations
Blue Jay
Cyanocitta cristata
236 observations
American Pokeweed
Phytolacca americana
234 observations
Ground-ivy
Glechoma hederacea
226 observations · iNaturalist
Eastern Skunk Cabbage
Symplocarpus foetidus
219 observations
Eastern Chipmunk
Tamias striatus
206 observations
House Sparrow
Passer domesticus
203 observations
Red-winged Blackbird
Agelaius phoeniceus
197 observations
Brown-belted Bumble Bee
Bombus griseocollis
197 observations
Northern Cardinal
Cardinalis cardinalis
189 observations
Greater Celandine
Chelidonium majus
188 observations · iNaturalist
Bittersweet Nightshade
Solanum dulcamara
181 observations
Common Tansy
Tanacetum vulgare
180 observations
Eastern Carpenter Bee
Xylocopa virginica
178 observations
Common Milkweed
Asclepias syriaca
174 observations
Chicory
Cichorium intybus
169 observations
Common Raccoon
Procyon lotor
166 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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