Based on 8,531 research-grade iNaturalist observations in Washington, Eastern Cottontail is most often recorded in May; in Washington it behaves like a summer visitor / breeder. It ranks #1 among mammals recorded in the state in our data.
Sylvilagus floridanus
Eastern Cottontail in Washington 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 Washington in May
Eastern Gray Squirrel
Douglas's Squirrel
American Beaver
Yellow-bellied Marmot
Common Raccoon
Mule Deer
Harbor Seal
Coyote
Places to look in Washington
National ForestGifford Pinchot National Forest
National ForestOlympic National Forest
State ParkPeace Arch Park
National ForestColville National Forest
National ForestMount Baker–Snoqualmie National Forest
Botanical GardenBellevue Botanical Garden
FAQ
When does Eastern Cottontail appear in Washington?
Mainly April–August, with the most records in May.
How common is Eastern Cottontail in Washington?
It ranks #1 by number of iNaturalist observations among mammals in Washington (8,531 records in our sample).