Migration timing

When do green herons arrive in Arizona?

The Green Heron is a summer breeder in Arizona — here is when to expect it, when it leaves, and how to be ready.

Green Heron, verified photograph
Photo: Wikimedia Commons

Green Heron timing in Arizona

Arrives
Around February
Leaves
By August
Status here
Summer breeder
Nesting season
March–July
Present roughly
February–August

In Arizona, green herons are present through the warm months, arriving around February and heading south again by August.

These windows are set by latitude: Arizona sits in the southern part of this species' range, so timing here runs earlier than the continental average — spring comes sooner, and the birds follow it. In any given year, weather can move the first arrivals by a week or two either way.

Month by month in this state

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Highlighted months are when green herons are expected in Arizona. The edges of the window are the interesting weeks — first arrivals and last departures vary most from year to year.

Getting ready before they arrive

The week before February is the time to act. Have feeders cleaned, filled and out by early February — the first green herons into Arizona are scouting for reliable food, and a station that's ready early gets added to their route.

Once nesting begins around March, adults switch to protein-rich food for their young and visits to feeders become quick and purposeful. Expect the busiest activity at dawn.

What green herons eat while they're here

  • Minnows, frogs, crayfish and dragonflies

One of few birds that uses bait — it drops insects or twigs on the water to lure fish.

Full Green Heron diet guide → · Best feeder for green herons →

Native plants that hold green herons in Arizona

Food keeps a migrant for a day; habitat keeps it for the season. These Arizona-native plants are known to attract green herons:

Black cherry
Prunus serotina · Tree

Summer fruit and one of the top caterpillar host trees.

American elderberry
Sambucus canadensis · Shrub

Late-summer berry clusters taken by over 40 bird species.

Tall goldenrod
Solidago altissima · Perennial

Insect-rich in fall and seed in winter.

Chokecherry
Prunus virginiana · Shrub

Dark summer fruit and heavy caterpillar load.

Ponderosa pine
Pinus ponderosa · Tree

Seeds and bark insects; pygmy nuthatch and woodpecker habitat.

Gambel oak
Quercus gambelii · Tree

Acorns for jays and woodpeckers across the southern Rockies.

Rabbitbrush
Ericameria nauseosa · Shrub

Late-season bloom supports insects; seed for sparrows.

Palo verde
Parkinsonia florida · Tree

Seed pods and insect-rich spring bloom.

Keep exploring

Frequently asked

When do green herons arrive in Arizona?

green herons typically arrive in Arizona around February, with nesting underway by March. Timing can shift a week or two with the weather in any given year.

When do green herons leave Arizona?

Most green herons have left Arizona by August. They spend the winter farther south and return the following spring.

Do green herons stay in Arizona all year?

No — in Arizona the Green Heron is a summer breeder, present roughly February–August. Outside that window it is rarely seen in the state.

What should I put out before green herons arrive in Arizona?

Have feeders up and clean by early February — first arrivals scout reliable food sources. Good offerings for this species: minnows, frogs, crayfish and dragonflies.

Sources

  1. Green Heron — All About Birds, Cornell Lab of Ornithology
  2. Green Heron life history — Cornell Lab of Ornithology
  3. Green Heron — Audubon Guide to North American Birds
  4. eBird region overview and bar charts — Arizona
  5. USDA Plant Hardiness Zone Map (2023)
  6. Audubon Native Plants Database

Timing reflects typical patterns for the region as a whole; local dates vary with elevation and year. Check the linked eBird bar charts for your county.