Based on 1,125 research-grade iNaturalist observations in Delaware, Mallard is most often recorded in May; in Delaware it behaves like a year-round resident. It ranks #10 among birds recorded in the state in our data.
Anas platyrhynchos
Mallard in Delaware 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 Delaware in May
Red-winged Blackbird
Great Blue Heron
Canada Goose
Osprey
Gray Catbird
Semipalmated Sandpiper
Blue Grosbeak
Common Yellowthroat
Places to look in Delaware
State ParkCape Henlopen State Park
Botanical GardenWinterthur Museum, Garden and Library
State ParkTrap Pond State Park
State ParkKillens Pond State Park
State ParkBellevue State Park
State ParkBrandywine Creek State Park
FAQ
When does Mallard appear in Delaware?
Mainly April–March, with the most records in May.
How common is Mallard in Delaware?
It ranks #10 by number of iNaturalist observations among birds in Delaware (1,125 records in our sample).