TL;DR
The Scottish parliament has voted to make swift bricks mandatory in all new buildings, aiming to support declining swift populations. This legislation marks a significant step in biodiversity conservation, contrasting with delays in other UK regions.
The Scottish parliament has approved a law making swift bricks mandatory for all new buildings, a move aimed at supporting the conservation of the endangered swift bird species and enhancing biodiversity across the country.
The new legislation was backed by MSPs across parties, following an amendment by Scottish Green MSP Mark Ruskell. The law requires that swift bricks be installed where reasonably practical and appropriate in all new dwellings. This decision comes after years of campaigning by wildlife advocates, who emphasize that swift bricks are a simple yet vital measure to aid declining populations.
While the legislation mandates the inclusion of swift bricks, it does not impose a strict obligation on developers or planning authorities to install them, unless there are compelling technical reasons. The measure is set to be implemented after a 12-month consultation process to establish appropriate building standards for the bricks, which also benefit other cavity-nesting birds such as sparrows, starlings, and house martins.
Why It Matters
This legislation marks a notable shift in biodiversity policy within the UK, positioning Scotland as a leader in wildlife-friendly building practices. With swift populations declining by approximately 60% since 1995 and fewer than 40,000 pairs remaining, the measure aims to reverse this trend by providing essential nesting sites. The move also highlights the importance of small-scale, practical conservation efforts in urban development, potentially inspiring similar policies elsewhere in the UK.

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Background
Efforts to promote swift-friendly architecture have faced delays elsewhere, notably in England, where a four-year campaign to mandate swift bricks has been met with resistance. The UK government has only incorporated such measures into planning guidance rather than law, resulting in inconsistent implementation. Scotland’s decision follows a successful precedent in Gibraltar, where swift bricks have contributed to population recovery. The Welsh government rejected similar proposals last year, citing concerns over developer flexibility.
“This iconic species was once a very common sight across Scotland, particularly in urban areas, but they are under threat, declining by 60% since 1995, which has led to them being on the red list of birds of conservation concern. I welcome suggestions of practical ways to help protect this important species and improve biodiversity.”
— Gillian Martin, Scottish Minister for Environment
“Swifts join our communities every summer, but they are becoming rarer everywhere. I’m looking forward to seeing every new building in Scotland host a family of swifts in the future and I hope the legislation here will inspire lawmakers across the UK to get on with it and give swifts a home.”
— Mark Ruskell, Scottish Green MSP
“Scotland’s decision on swift bricks is a significant step in ensuring the survival of this species, which has come to depend so much on us. On the ‘Rock’ we have had this policy for several decades and we have seen a declining population of swifts first stabilise and then increase.”
— Prof John Cortes, Gibraltar Environment Minister

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What Remains Unclear
It remains unclear how strictly developers will be required to comply with the legislation once standards are finalized, and whether enforcement mechanisms will be strengthened. The effectiveness of the measure in reversing swift population decline will depend on implementation and other habitat factors, which are still being evaluated.
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What’s Next
The Scottish government will conduct a 12-month consultation to establish detailed building standards for swift bricks. Following this, legislation will be fully enacted, and authorities will monitor compliance. Advocacy groups will likely continue to push for similar measures across the UK.

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Key Questions
What are swift bricks and why are they important?
Swift bricks are specially designed nesting sites installed in buildings to provide safe places for swifts to breed and raise their young, helping to support declining populations of this endangered species.
Will all new buildings in Scotland be required to have swift bricks?
The law mandates that swift bricks be installed where reasonably practical and appropriate, but does not impose a strict obligation on every new building. Standards will be finalized after a consultation process.
How does this legislation compare to policies in other parts of the UK?
Unlike Scotland, England has only incorporated swift bricks into planning guidance without a legal requirement, leading to slower adoption. Wales rejected mandatory measures last year, citing developer flexibility concerns.
What impact is this expected to have on swift populations?
Experts believe that providing nesting sites through swift bricks can help stabilize and potentially increase swift populations, which have declined significantly due to habitat loss and modern building renovations.