Common Swift
©
© Marcel Burkhardt
Conservation programme for birds in Switzerland - Priority species

Common Swift

The Common Swift is widespread in villages and towns, with the population concentrated in the Central Plateau. It has occasionally been seen to breed at over 2000 m asl. As a nesting site the Common Swift chooses dark, usually small, crevices in buildings, to which it faithfully returns year after year. However, many breeding sites are being lost due to the renovation or demolition of buildings, so protecting and preserving them is essential in order to maintain the population. This requires reliable inventories, as well as the involvement of multiple stakeholders such as cantons/municipalities and planners in construction projects. The use of nesting aids is often an easy way of conserving and creating additional nesting sites.

Distribution and development

Schematic distribution
Verbreitung - Common Swift
Schematic distribution during the breeding season (ochre), in winter time (dotted in blue) or during migration periods (dotted in vinaceous).
Breeding bird index
The graph shows the relative evolution of the breeding population in Switzerland (100 = mean value). Example: A value of 130 means that the population in the corresponding year was 30% above the mean value of the entire period considered.
Distribution and prevalence in Switzerland
  • Widespread in Switzerland, concentrated in the major conurbations and cities.
  • Main area of distribution between 350 and 1000 m asl, with isolated breeding sites up to around 2400 m asl
Development in Switzerland
  • The Swiss population fluctuates from year to year.
  • A decline in numbers has been recorded in some areas.
International
  • Widespread in a broad belt from North Africa and northern Europe to Lake Baikal and China.
  • In Europe, the population has declined by around 25% since 1980.
  • A sharp decline in numbers has been observed e.g. in the UK.

Habitat and food

Habitat
Urban areas
Buildings, Settlements
Food
Insects and spiders
Flying insects
Habitat and food requirements

The Common Swift usually nests in small dark cavities in buildings, which it finds mainly in villages and cities at lower and intermediate elevations.

Feeding habitat

  • Skies above open areas, such as wetlands, urban areas, agricultural areas, mountains.

Nesting site

  • Mainly in cavities and crevices in buildings, will also readily use artificial nesting aids.
  • Is very faithful to its nesting site.

Winter habitat

  • Long-distance migrant.
  • Overwinters in tropical Africa.
Conservation programme for birds in Switzerland - Priority species

Common Swift

The Common Swift is widespread in villages and towns, with the population concentrated in the Central Plateau. It has occasionally been seen to breed at over 2000 m asl. As a nesting site the Common Swift chooses dark, usually small, crevices in buildings, to which it faithfully returns year after year. However, many breeding sites are being lost due to the renovation or demolition of buildings, so protecting and preserving them is essential in order to maintain the population. This requires reliable inventories, as well as the involvement of multiple stakeholders such as cantons/municipalities and planners in construction projects. The use of nesting aids is often an easy way of conserving and creating additional nesting sites.
Priority species at national level
The ‘responsibility’ factor describes the international significance of the Swiss population of a species. The allocation to responsibility classes was based primarily on geographical distribution (Switzerland, Europe or worldwide) and the genetic and/or ecological significance of Swiss populations.
  • Exclusive responsibility
  • Very high responsibility
  • High responsibility
  • Responsibility
  • Joint responsibility
  • Minimal joint responsibility
Operational level
The level at which measures should be taken for all national priority species is specified within the framework of specific 'species conservation' (SC), 'habitat conservation' (HC), or the biodiversity-friendly use of natural resources on the ""entire territory"" (ET) by all sectoral policies. Each species has been assigned to only one level. If measures at the 'entire territory' (ET) level are insufficient for the conservation and promotion of the species, measures at the second level, 'specific habitat conservation' (HC), are required. If this is also insufficient, specific 'species conservation' (SC) measures must also be applied. Therefore, a species requiring specific species conservation measures must also be given special consideration when implementing measures at the 'specific habitat conservation' and 'entire country area' levels.
  • SC species conservation
  • HC habitat conservation
  • NT national territory
SC
Urgency
An expert assessment was made of the urgency with which measures should be implemented, continued and/or newly planned for all species assigned to the specific 'species conservation' and 'habitat conservation' action levels. The two factors of endangerment and international responsibility were considered, as were the prospects of success.
  • Necessary and important
Circle
Circle
Circle
Population in Switzerland
(2025)
The population estimate indicates how many pairs bred during the specified period. As this number fluctuates from year to year and due to uncertainties in population surveys, a range is given. For some species that are difficult to survey, only displaying males are listed. The population estimates cannot be simply doubled to derive the number of individuals. The number of birds is much higher after the breeding season, some birds take years to reach reproductive maturity, and in some cases the sex ratio is not 1:1.
50000-80000pairs
Red List
Red lists are based on the scientific criteria of the IUCN and assess the risk of extinction of a species. This helps to identify where there is a particularly urgent need for action in nature conservation.
  • Near Threatened (NT)

Project managers

Threats, activities and forecasts
Limiting factors and threats

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.

 
Breeding season
  • Availability of suitable nest cavities.
  • Destruction of existing nest sites during construction projects.
 
Migration/ Winter
  • Long periods of bad weather during migration can lead to losses.
  • Exposure in wintering grounds to pesticides banned in Europe.
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Necessary activities
Monitoring
  • Trends in individual Common Swift colonies are monitored by the Swiss Ornithological Institute in collaboration with volunteer colony guardians.
 
Conservation
  • 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.
 
Research
  • 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.
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Prospects for success and prognostics
  • 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.
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Conservation measures and stakeholders
Take nesting sites into consideration in construction projects

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.

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Cantons
Facility management
Municipalities
Planners and architects
Private individuals
Offer and maintain nesting aids

The supply of suitable nest cavities is limited. However, these can be easily and successfully imitated by nesting aids.

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Municipalities
Nature conservation
Planners and architects
Private individuals
Conservation projects Swiss Ornithological Institute
Urban Habitat
Conservation programme for Common Swifts and Alpine Swifts
vogelwarte.ch
Urban Habitat
Protection of building breeders
vogelwarte.ch
©
© Marcel Burkhardt
Birds of Switzerland

Common Swift

Hardly any other bird is adapted better to life in the air than the Common Swift. This excellent aerial hunter resembles a swallow but flies at breakneck speed. It sleeps and mates on the wing. With Common Swifts wheeling higher and higher at dusk, it used to be thought that they returned when it was dark or spent the night on the moon. Emil Weitnauer, an ornithologist who lived near...
To the species profile in the bird database

Synergies with other priority species