- #885 ‘I feel I’ve made a mark’: the man who built homes for 60,000 swifts | Birds | The Guardian 20.1.2022
- https://www.theguardian.com/environment/2022/jan/20/the-man-who-built-homes-for-60000-swifts-aoe
- tervapääsky pönttö Iso-Britannia
http://kaupunkilinnut.fi/?links&linkid=885