Green Herons in Washington
When green herons are present in Washington, when they nest, which native Washington plants feed them, and how to host them in a USDA 4a–9a yard.
- Status in Washington
- Summer breeder
- Nesting window
- April–July
- Broods
- 1–2 per season
- Hardiness zones
- USDA 4a–9a
When to expect green herons in Washington
Green Herons are summer residents in Washington, arriving shortly before nesting begins in April and leaving after the young are independent.
Marine west-coast climate west of the Cascades, semi-arid shrub-steppe to the east.
Nesting in Washington
Across Washington, green herons typically nest from April–July. Plan around that window: March for setup, July for clean-out.
Dry, sunny summers west of the Cascades; hot in the Columbia Basin.
- Green Herons don't use nest boxes. Keep dense native shrubs and trees such as paper birch, chokecherry, ponderosa pine for nest sites.
- Delay heavy pruning of shrubs until after July.
Native Washington plants that attract green herons
Of the regional native plants we track for Washington, these 8 provide food or cover green herons use:
Insect-rich in fall and seed in winter.
Catkin seed feeds redpolls and siskins all winter.
Dark summer fruit and heavy caterpillar load.
Seeds and bark insects; pygmy nuthatch and woodpecker habitat.
Late-season bloom supports insects; seed for sparrows.
Acorns and a rich insect community in the Pacific Northwest.
Seed for crossbills, siskins and chickadees.
Early catkins draw insects for arriving warblers and hummingbirds.
Feeding green herons through the Washington year
- Top foods: None — a fish-bearing pond is the draw.
- In Washington's summer: offer water and insect foods; natural food is abundant.
Full diet breakdown for green herons · Best feeder for green herons
Frequently asked
Are green herons in Washington year-round?
No. Green Herons are summer breeders in Washington and leave for the winter.
When do green herons nest in Washington?
Nesting in Washington typically runs April–July, with 1–2 per season. Clutches are 2–6 eggs, incubated for 19–21 days.
What native plants attract green herons in Washington?
Tall goldenrod, Paper birch, Chokecherry, Ponderosa pine, Rabbitbrush, Oregon white oak, Douglas fir, Willow (Bebb) are native plants in Washington that provide food or cover for green herons.
Green Herons in other regions
Other backyard birds in Washington
Sources
- Green Heron — All About Birds, Cornell Lab of Ornithology
- Green Heron life history — Cornell Lab of Ornithology
- Green Heron — Audubon Guide to North American Birds
- eBird region overview and bar charts — Washington
- USDA Plant Hardiness Zone Map (2023)
- 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.