Based on 2,287 research-grade iNaturalist observations in New York, American Beaver is most often recorded in April; in New York it behaves like a seasonal. It ranks #10 among mammals recorded in the state in our data.
Castor canadensis
American Beaver in New York by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also seen in New York in April

Eastern Gray Squirrel

White-tailed Deer

Eastern Cottontail

Groundhog
Eastern Chipmunk

Common Raccoon

Muskrat

American Red Squirrel
Places to look in New York
New York Botanical Garden
Botanical GardenBrooklyn Botanic Garden
Adirondack Park
Queens Botanical Garden
Franklin D. Roosevelt Four Freedoms Park
Planting Fields Arboretum State Historic Park
FAQ
When does American Beaver appear in New York?
Mainly March–November, with the most records in April.
How common is American Beaver in New York?
It ranks #10 by number of iNaturalist observations among mammals in New York (2,287 records in our sample).