Based on 1,178 research-grade iNaturalist observations in Wyoming, Common Merganser is most often recorded in July; in Wyoming it behaves like a summer visitor / breeder. It ranks #11 among birds recorded in the state in our data.
Mergus merganser
Common Merganser in Wyoming 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 Wyoming in July
Common Raven
Killdeer
American Robin
Mountain Bluebird
Canada Goose
Osprey
Bald Eagle
American White Pelican
Places to look in Wyoming
National ForestShoshone National Forest
National ForestBridger–Teton National Forest
State ParkFort Bridger
State ParkHot Springs State Park
State ParkFort Fred Steele State Historic Site
National Wildlife RefugeNational Elk Refuge
FAQ
When does Common Merganser appear in Wyoming?
Mainly May–September, with the most records in July.
How common is Common Merganser in Wyoming?
It ranks #11 by number of iNaturalist observations among birds in Wyoming (1,178 records in our sample).