Based on 9,179 research-grade iNaturalist observations in Arizona, Anna's Hummingbird is most often recorded in March; in Arizona it behaves like a year-round resident. It ranks #6 among birds recorded in the state in our data.
Calypte anna
Anna's Hummingbird in Arizona 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 Arizona in March

Mourning Dove
Gambel's Quail
House Finch

Vermilion Flycatcher

Gila Woodpecker

Curve-billed Thrasher

Great-tailed Grackle

Cactus Wren
Places to look in Arizona
Desert Botanical Garden
Coronado National Forest
Boyce Thompson Arboretum
Tonto National Forest
Yuma Territorial Prison
Apache–Sitgreaves National Forests
FAQ
When does Anna's Hummingbird appear in Arizona?
Mainly July–May, with the most records in March.
How common is Anna's Hummingbird in Arizona?
It ranks #6 by number of iNaturalist observations among birds in Arizona (9,179 records in our sample).