The common swift is one of the UK's most aerial birds, spending almost its entire life on the wing, and has suffered significant population declines linked to loss of nesting sites in modern buildings.
Swift welfare is closely linked to nest site availability and the integrity of their highly aerial lifestyle. Swifts found on the ground are almost always injured or exhausted and require specialist care - they cannot simply be placed on a surface and released. Wildlife rescue organisations provide essential rehabilitation services. Prevention of nest site loss through building design - incorporating swift bricks into new constructions and sensitively restoring old buildings - is the highest-impact individual action available. Climate change also threatens swifts by affecting insect prey availability during breeding season, reducing chick survival rates.