Delaware · Year-round resident

Common Grackles in Delaware

When grackles are present in Delaware, when they nest, which native Delaware plants feed them, and how to host them in a USDA 7a–8a yard.

Blackbirds (Icteridae)Common GrackleQuiscalus quiscula

Status in Delaware: Year-round resident
Nesting window: April–June
Broods: 1–2 per season
Hardiness zones: USDA 7a–8a

When to expect grackles in Delaware

Common Grackles live in Delaware all year. Mild winters with modest snow; coastal marshes draw huge numbers of wintering sparrows and blackbirds. That makes the cold months the time your yard matters most to them: their winter diet shifts toward waste grain and acorns.

Humid subtropical to temperate coastal plain between Delaware Bay and the Atlantic.

Nesting in Delaware

Across Delaware, grackles typically nest from April–June. Nest site: bulky cup in dense conifers, often in loose colonies. Females lay 4–6 eggs, incubate for 13–14 days, and young leave the nest after 12–15 days.

Hot, humid summers; bay-shore woodlots are important migrant stopovers in May.

Common Grackles don't use nest boxes. Keep dense native shrubs and trees such as white oak, sugar maple, red maple for nest sites.
Delay heavy pruning of shrubs until after June.

Native Delaware plants that attract grackles

Of the regional native plants we track for Delaware, these 8 provide food or cover grackles use:

White oak

Quercus alba · Tree

Acorns plus hundreds of caterpillar species for nestling food.

Wild bergamot

Monarda fistulosa · Perennial

Tubular flowers for hummingbirds and seed heads for finches.

Black-eyed Susan

Rudbeckia hirta · Perennial

Prolific seed heads for finches and sparrows.

New England aster

Symphyotrichum novae-angliae · Perennial

Late nectar for insects and fall seed for sparrows.

Little bluestem

Schizachyrium scoparium · Perennial

Native bunchgrass; winter seed and ground cover for sparrows and juncos.

Tall goldenrod

Solidago altissima · Perennial

Insect-rich in fall and seed in winter.

Sugar maple

Acer saccharum · Tree

Hosts hundreds of caterpillar species; spring flowers draw early insects.

Red maple

Acer rubrum · Tree

Among the first spring bloomers; early insects for returning migrants.

Feeding grackles through the Delaware year

Grackles arrive in flocks and can dominate open feeders; weight-activated and caged feeders help keep smaller birds fed.

Best foods: Cracked corn, Sunflower.
In Delaware's winter: Mild winters with modest snow; coastal marshes draw huge numbers of wintering sparrows and blackbirds.

Full diet breakdown for grackles · Best feeder for grackles

Frequently asked

Are grackles in Delaware year-round?

Yes. Common Grackles are year-round residents in Delaware.

When do grackles nest in Delaware?

Nesting in Delaware typically runs April–June, with 1–2 per season. Clutches are 4–6 eggs, incubated for 13–14 days.

What native plants attract grackles in Delaware?

White oak, Wild bergamot, Black-eyed Susan, New England aster, Little bluestem, Tall goldenrod, Sugar maple, Red maple are native plants in Delaware that provide food or cover for grackles.

Other backyard birds in Delaware

Northern Cardinal Eastern Bluebird Carolina Chickadee Purple Martin Downy Woodpecker Hairy Woodpecker American Goldfinch Tufted Titmouse White-breasted Nuthatch House Wren House Finch Purple Finch Ruby-throated Hummingbird Carolina Wren Mourning Dove American Robin Dark-eyed Junco White-throated Sparrow Song Sparrow Chipping Sparrow Red-bellied Woodpecker Northern Flicker Pileated Woodpecker Red-headed Woodpecker Yellow-bellied Sapsucker Red-breasted Nuthatch Brown-headed Nuthatch Brown Creeper Red-winged Blackbird Baltimore Oriole Orchard Oriole Pine Siskin Indigo Bunting Eastern Towhee Gray Catbird Northern Mockingbird Brown Thrasher Cedar Waxwing Tree Swallow Barn Swallow Eastern Phoebe Chimney Swift Yellow-rumped Warbler Pine Warbler Eastern Screech-Owl Wood Thrush Great Crested Flycatcher Eastern Kingbird American Tree Sparrow House Sparrow European Starling White-crowned Sparrow Fox Sparrow

Sources

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.