Common Grackles in New Brunswick
When grackles are present in New Brunswick, when they nest, which native New Brunswick plants feed them, and how to host them in a Canada 3a–5b yard.
- Status in New Brunswick
- Summer breeder
- Nesting window
- May–June
- Broods
- 1–2 per season
- Hardiness zones
- Canada 3a–5b
When to expect grackles in New Brunswick
Common Grackles are summer residents in New Brunswick, arriving shortly before nesting begins in May and leaving after the young are independent. Through the season they feed on beetles, grasshoppers and earthworms.
Humid continental with Bay of Fundy and Gulf of St. Lawrence coastlines and extensive forest.
Nesting in New Brunswick
Across New Brunswick, grackles typically nest from May–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.
Mild summers.
- Common Grackles don't use nest boxes. Keep dense native shrubs and trees such as bur oak, paper birch, sugar maple for nest sites.
- Delay heavy pruning of shrubs until after June.
Native New Brunswick plants that attract grackles
Of the regional native plants we track for New Brunswick, these 8 provide food or cover grackles use:
Drought-hardy prairie oak with large acorns and a heavy insect load.
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.
Among the first spring bloomers; early insects for returning migrants.
Feeding grackles through the New Brunswick 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 New Brunswick's summer: offer water and insect foods; natural food is abundant.
Frequently asked
Are grackles in New Brunswick year-round?
No. Common Grackles are summer breeders in New Brunswick and leave for the winter.
When do grackles nest in New Brunswick?
Nesting in New Brunswick typically runs May–June, with 1–2 per season. Clutches are 4–6 eggs, incubated for 13–14 days.
What native plants attract grackles in New Brunswick?
Bur oak, Black-eyed Susan, New England aster, Little bluestem, Tall goldenrod, Paper birch, Sugar maple, Red maple are native plants in New Brunswick that provide food or cover for grackles.
Common Grackles in other regions
Other backyard birds in New Brunswick
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 — New Brunswick
- Plant Hardiness Zones of Canada — Natural Resources Canada
- 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.