Common Grackles in Connecticut
When grackles are present in Connecticut, when they nest, which native Connecticut plants feed them, and how to host them in a USDA 5b–7b yard.
- Status in Connecticut
- Summer breeder
- Nesting window
- April–June
- Broods
- 1–2 per season
- Hardiness zones
- USDA 5b–7b
When to expect grackles in Connecticut
Common Grackles are summer residents in Connecticut, arriving shortly before nesting begins in April and leaving after the young are independent. Through the season they feed on beetles, grasshoppers and earthworms.
Humid continental with maritime moderation along Long Island Sound.
Nesting in Connecticut
Across Connecticut, 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.
Warm, humid summers; peak nesting runs May through July.
- Common Grackles don't use nest boxes. Keep dense native shrubs and trees such as white oak, paper birch, sugar maple for nest sites.
- Delay heavy pruning of shrubs until after June.
Native Connecticut plants that attract grackles
Of the regional native plants we track for Connecticut, these 8 provide food or cover grackles use:
Acorns plus hundreds of caterpillar species for nestling food.
Tubular flowers for hummingbirds and seed heads for finches.
Prolific seed heads for finches and sparrows.
Late nectar for insects and fall seed for sparrows.
Native bunchgrass; winter seed and ground cover for sparrows and juncos.
Insect-rich in fall and seed in winter.
Catkin seed feeds redpolls and siskins all winter.
Hosts hundreds of caterpillar species; spring flowers draw early insects.
Feeding grackles through the Connecticut 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 Connecticut's summer: offer water and insect foods; natural food is abundant.
Frequently asked
Are grackles in Connecticut year-round?
No. Common Grackles are summer breeders in Connecticut and leave for the winter.
When do grackles nest in Connecticut?
Nesting in Connecticut 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 Connecticut?
White oak, Wild bergamot, Black-eyed Susan, New England aster, Little bluestem, Tall goldenrod, Paper birch, Sugar maple are native plants in Connecticut that provide food or cover for grackles.
Common Grackles in other regions
Other backyard birds in Connecticut
Sources
- Common Grackle — All About Birds, Cornell Lab of Ornithology
- Common Grackle life history — Cornell Lab of Ornithology
- Common Grackle — Audubon Guide to North American Birds
- eBird region overview and bar charts — Connecticut
- 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.