© Marcel Burkhardt
Effects of climate change on birds in Switzerland
Climate and available habitats are the most important factors determining the distribution and abundance of birds in Switzerland. We are already starting to see initial effects of climate change on various species. For example, short-distance migrants often return early from their wintering grounds in spring, and mountain dwellers are retreating to higher altitudes. For some species, forecasts predict major changes in the decades to come. Detecting changes in distribution and population size early is important in order to recognize when a species is at risk. Several of the Ornithological Institute’s projects are devoted to this issue.
- identifying species that are affected by climate change and documenting trends in altitude distribution, range and population size
- studying the occurrence of species throughout the annual cycle (phenology)
- researching the ecology of national priority species
The effect of climate change on birds is an extremely broad topic, and its study requires both wide-ranging analyses that encompass all species, and detailed ecological studies of individual species.
Effects of climate change on breeding birds
The Swiss Ornithological Institute calculates a climate change vulnerability index for all species of breeding birds. This index, which is updated annually, informs us about the actual changes in population sizes. Mountain dwellers are presumably more sensitive to rising temperatures than lowland species, and respond by retreating to higher altitudes in the Alps. Conversely, species that thrive in warm climates are predicted to increase. Using data from the monitoring and atlas projects, we investigate whether such changes are already underway.
Ecology of individual species
Ecological studies of individual species are a necessary part of identifying and understanding climate-induced mechanisms. The focus here is on alpine species such as Rock Ptarmigan and White-winged Snowfinch. Due to its topography, Switzerland is home to a large percentage of the European populations of these species, and has a long-term responsibility for their survival.
Migrants benefit from returning as early as possible to their breeding grounds in spring in order to secure the best habitats. Long-term data series allow us to identify climate-induced changes in arrival dates. Based on these findings, we are developing a phenology index for migrants.
Climate change has been identified as one of the main threats to biodiversity in the coming decades. In the Alps especially, its effects are already visible and will only intensify in the future. Switzerland has a responsibility of international scope to ensure the survival of many alpine species. In addition, the situation in Switzerland is also being modified by new species coming here from other regions and spreading. Therefore, studies of Swiss breeding birds have a high priority.
Data from the programme "Monitoring common breeding birds" allow us to show that within a decade, more than a third of all species display an upward trend in altitude distribution. The results of the breeding bird atlas 2013–2016 will allow a more in-depth analysis of the changes in altitude distribution as compared to 1993–1996.
The Rock Ptarmigan is moving upwards at a rate of 100 m per decade. Due to topography, the available habitat decreases with altitude. We have already been able to show that the species is declining by varying degrees in different areas. On average in Switzerland, the rate of decline is -13 % in the course of 18 years.
Based on the records of opportunistic observations, we investigated whether the main song period in spring has shifted in the last ten to 15 years. Some species showed no change, whereas others have advanced the peak of their song period by more than ten days in ten years.
Dr Boris Schröder, Technische Universität Braunschweig, Germany
Dr Niklaus Zimmermann, Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, Switzerland
Dr Janine Bolliger, Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland
Dr Richard Gregory, Dr Ruud Foppen, European Bird Census Council (EBCC)
Federal Office for the Environment FOEN
Variable decline of Alpine Rock Ptarmigan (Lagopus muta Helvetica) in Switzerland between regions and sites.
Consistent response of bird populations to climate change on two continents.
Microclimate and microhabitat selection by the Alpine Rock Ptarmigan (Lagopus muta helvetica) during summer.
Assessing species vulnerability to climate and land use change: the case of the Swiss breeding birds.
Studying phenology by flexible modelling of seasonal detectability peaks.
Climate change impacts on biodiversity in Switzerland: A review.
The altitudinal frontier in avian climate impact research.
SBI Bird Index SBI® Climate Change.
Are Swiss birds tracking climate change? Detecting elevational shifts using response curve shapes.
Gemäss den Corona-Regelungen des Bundes bleibt das Besuchszentrum bis am 28. Februar 2021 geschlossen.
Unsere Vogelpflegestation funktioniert wie gewohnt weiter. Vögel nehmen wir täglich (Montag-Sonntag) von 09.00-12.00 und von 13.30-17.00 Uhr entgegen.
Aufgrund der verschärften Corona-Massnahmen sind unsere Mitarbeiterinnen und Mitarbeiter grösstenteils im Home Office. Bitte haben Sie Verständnis, wenn wir momentan nicht alle Anfragen sofort bearbeiten können. Wir sind Ihnen dankbar, wenn Sie uns primär per Mail kontaktieren, ausser in Notfällen.
Herzlichen Dank für Ihr Verständnis.
Ihre Schweizerische Vogelwarte Sempach
Informations sur le coronavirus
Selon les mesures de la Confédération contre le coronavirus, le centre de visite sera fermé jusqu’au 28 février 2021.
Notre station de soins fonctionne normalement. Nous réceptionnons les oiseaux tous les jours (lundi-dimanche) de 09.00 à 12.00 et de 13.30 à 17.00.
En raison des mesures Covid plus strictes, la plupart de nos employés télétravaillent depuis leur domicile. Nous ne sommes actuellement pas en mesure de traiter toutes les demandes immédiatement. Nous vous serions reconnaissants de bien vouloir nous contacter principalement par courrier électronique, sauf en cas d'urgence. Nous vous remercions de votre compréhension.
Votre Station ornithologique suisse de Sempach
In conformità alle misure della Confederazione contro il coronavirus, il Centro visite è chiuso fino al 28 febbraio 2021.
Il nostro Centro di cura per uccelli continua a funzionare normalmente. Gli uccelli vengono presi in consegna giornalmente (lunedì-domenica) dalle 09.00 alle 12.00 e dalle 13.30 alle 17.00.
A causa delle misure più severe per il coronavirus, la maggior parte dei nostri dipendenti lavora da casa. Contiamo quindi sulla vostra comprensione se non riusciamo a evadere immediatamente tutte le richieste di informazioni. Vi saremmo grati se poteste contattarci principalmente via e-mail. In caso di emergenza, tuttavia, siamo naturalmente a vostra disposizione. Grazie per la vostra comprensione.
La vostra Stazione ornitologica svizzera
Informations concerning the coronavirus
Due to the measures taken by the Swiss government against the coronavirus, the visitor centre will be closed until February 28th 2021.
Our bird care station continues to operate as usual. We accept birds daily (Monday-Sunday) from 09.00-12.00 and from 13.30-17.00.
Due to the stricter Corona measures, most of our employees are in their home offices. Please understand that we cannot process all inquiries immediately. We would be grateful if you could contact us primarily by e-mail. In case of emergency we are of course available for you. Thank you for your understanding.
Your Swiss Ornithological Institute