Swifts in Northern Ireland
When the Swift (Apus apus) is present in Northern Ireland, when it nests, and which native Northern Ireland plants supply the food it depends on.
- Status in Northern Ireland
- Summer visitor
- Nesting season
- May–July
- Size
- 17 cm, 40 g
- Nest box
- Swift box with a 65 × 30 mm entrance, 5 m+ up
- Delivery
- Perch Supply ships to the UK
When to expect swifts in Northern Ireland
The Swift arrives in Northern Ireland in spring to breed and leaves again in autumn. Cool summers; hedgerows and farm gardens hold much of the breeding bird life.
Mild, wet and windy maritime climate with few temperature extremes.
Nesting in Northern Ireland
In Northern Ireland the Swift usually nests May–July. Nest site: under roof tiles or in swift boxes. Clutches are 2–3 eggs, incubated for 19–20 days; chicks fledge after 37–56 days, and pairs raise 1 per year.
- Nest box: Swift box with a 65 × 30 mm entrance, 5 m+ up. Put boxes up by February and clean them out between September and January.
- Avoid cutting hedges during the nesting season (roughly March to August) — in the UK, disturbing an active nest is an offence under the Wildlife and Countryside Act 1981.
Native Northern Ireland plants for swifts
Of the native plants we track for Northern Ireland, these 8 provide food the Swift uses:
Haws feed thrushes all winter; spring blossom supports hundreds of insect species.
Late-winter berries when little else is left, plus dense nesting cover.
Late-summer berries taken by Blackcaps and thrushes.
Thorny cover that protects nests; early blossom for insects.
Berries and nest sites in its tangles; moths for insect-eaters.
Blackberries and impenetrable nesting cover.
Seed heads for Goldfinches and a nectar source for insects.
Early-summer cherries for Blackbirds and Jays.
Feeding in the garden
Airborne insects.
- Does not visit feeders — habitat and water are what bring it in.
- Swift bricks and boxes under eaves are the single biggest help.
Frequently asked questions
Frequently asked
Are swifts in Northern Ireland all year?
No. The Swift is a summer visitor to Northern Ireland, arriving to breed and leaving in autumn.
When do swifts nest in Northern Ireland?
Typically May–July. Clutches are 2–3 eggs, incubated for 19–20 days, with 1 per year.
Which native plants help swifts in Northern Ireland?
Hawthorn, Ivy, Elder, Blackthorn, Honeysuckle, Bramble, Common knapweed, Wild cherry are native to Northern Ireland and provide food or cover the Swift uses.
What nest box does the Swift use?
Swift box with a 65 × 30 mm entrance, 5 m+ up.
Swifts in other countries
Other garden birds in Northern Ireland
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.