Barn Swallows in New Jersey
When barn swallows are present in New Jersey, when they nest, which native New Jersey plants feed them, and how to host them in a USDA 6a–7b yard.
- Status in New Jersey
- Summer breeder
- Nesting window
- May–July
- Broods
- 1–2 per season
- Hardiness zones
- USDA 6a–7b
When to expect barn swallows in New Jersey
Barn Swallows are summer residents in New Jersey, arriving shortly before nesting begins in May and leaving after the young are independent. Through the season they feed on flies, beetles and moths.
Humid continental to subtropical, from the Highlands in the north to the Pine Barrens and Cape May.
Nesting in New Jersey
Across New Jersey, barn swallows typically nest from May–July. Nest site: mud cup on beams and ledges under shelter. Females lay 3–7 eggs, incubate for 12–17 days, and young leave the nest after 15–27 days.
Hot, humid summers; Cape May is a world-class migration funnel.
- Barn Swallows don't use nest boxes. Keep dense native shrubs and trees such as flowering dogwood, serviceberry, white oak for nest sites.
- Delay heavy pruning of shrubs until after July.
Native New Jersey plants that attract barn swallows
Of the regional native plants we track for New Jersey, these 8 provide food or cover barn swallows use:
Fat-rich red fall fruit taken by thrushes, bluebirds and woodpeckers.
Early-summer berries arrive exactly when nestlings are being fed.
Acorns plus hundreds of caterpillar species for nestling food.
Summer fruit and one of the top caterpillar host trees.
Late-summer berry clusters taken by over 40 bird species.
Blue-black fall fruit and dense nesting cover.
Lipid-rich red fruit fuels fall migrants.
Late nectar for insects and fall seed for sparrows.
Feeding barn swallows through the New Jersey year
Barn swallows nest on ledges under eaves and in barns; an open-front ledge shelf gives them a site.
- Best foods: .
- In New Jersey's summer: offer water and insect foods; natural food is abundant.
Frequently asked
Are barn swallows in New Jersey year-round?
No. Barn Swallows are summer breeders in New Jersey and leave for the winter.
When do barn swallows nest in New Jersey?
Nesting in New Jersey typically runs May–July, with 1–2 per season. Clutches are 3–7 eggs, incubated for 12–17 days.
What native plants attract barn swallows in New Jersey?
Flowering dogwood, Serviceberry, White oak, Black cherry, American elderberry, Arrowwood viburnum, Spicebush, New England aster are native plants in New Jersey that provide food or cover for barn swallows.
Barn Swallows in other regions
Other backyard birds in New Jersey
Sources
- Barn Swallow — All About Birds, Cornell Lab of Ornithology
- Barn Swallow life history — Cornell Lab of Ornithology
- Barn Swallow — Audubon Guide to North American Birds
- eBird region overview and bar charts — New Jersey
- 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.