Common Swift
Distribution and development
Habitat and food
Common Swift
The greatest risk to the Common Swift comes from the loss of nesting sites – for example due to the restoration, demolition of buildings or renovations to improve energy efficiency. By contrast, declines in populations due to weather conditions are often compensated within a few years.
- Availability of suitable nest cavities.
- Destruction of existing nest sites during construction projects.
- Long periods of bad weather during migration can lead to losses.
- Exposure in wintering grounds to pesticides banned in Europe.
- Trends in individual Common Swift colonies are monitored by the Swiss Ornithological Institute in collaboration with volunteer colony guardians.
- Protect and preserve nesting sites during construction projects by drawing up inventories of building-nesting birds.
- Install artificial nesting aids as replacements during the construction period.
- Use nesting aids to expand the supply of nesting sites.
- Awareness-raising and advice for stakeholders and other parties involved.
- Examine the effects of insect decline on breeding success and population development.
- Investigate whether the population trend determined by the development of individual colonies is actually correct, because usually only well-maintained colonies are included in the calculations.
- The Common Swift breeds in many places, but numerous breeding sites are being lost due to the renovation or demolition of older buildings.
- Provided these breeding sites are consistently protected, the species will probably be able to maintain its population well.
- Given relevant information and encouragement, wide use of nesting aids could be made for Common Swift conservation.
Protecting existing nesting sites is key to preserving the Common Swift population, as pairs always return to the same breeding site. Inventories of building-nesting birds are an important element here.
The supply of suitable nest cavities is limited. However, these can be easily and successfully imitated by nesting aids.