© Steffen Hahn
Phenology of migration – environmental factors and individual attributes
More than 2 billion passerines migrate from their European breeding grounds to their residence areas in sub-Saharan Africa. The bird’s behaviour and migratory pattern is shaped by the seasonal food availability en route and in the African residence areas, as well as by the short term weather conditions. The critical factors for a successful return to the breeding grounds are barely known for most species and populations of trans-Sahara migrants.
- What are the temporal and spatial patterns of migration and residency for trans-Sahara migrants during the non-breeding period?
- What is the influence of seasonality of environmental factors on these patterns and their variability?
- How much are environmental factors in the African residence areas responsible for reproductive success?
- Are populations with high connectivity between breeding and non-breeding ranges more affected by local environmental conditions in the African residence area than those with low connectivity?
For selected populations, their African residence areas and to some extent their migratory routes and stopover sites are identified by using miniaturized geolocator . This allows investigating the impact of environmental conditions on the timing and spatial patterns during the non-breeding period. In addition, it enables the investigation of habitat use.
Comparing the relationship between environmental factors en route and the African residence areas with the breeding success will allow extracting the most relevant factors governing species- and population-specific migratory strategies. In addition, looking at kinship will shed light on the pheno- and genotypic variability in migratory patterns.
These questions are being investigated in hoopoes, Alpine swifts and wheatears. Several other species are similarly studied in cooperation with international partners.
The degree of flexibility in migratory patterns in relation to environmental conditions allows for estimating the potential and the limits of phenotypic plasticity, and thus the potential capacity to adapt to fast environmental changes, which can affect reproduction.
To learn more about these dynamic processes is fundamental for our understanding of bird migration, but can also be crucial for species-specific conservation measures.
- Quantification of the number of individuals migrating from Europe to sub-Saharan Africa.
- Denomination of African non-breeding residence areas for populations of hoopoes, Alpine swifts, barn swallows and nightingales.
- Confirmation of non-stop flights of Alpine swifts during their stay in sub-Saharan Africa.
- Bee-eater migration
- Barn swallow migration
- Peter Adamík, Palacký University in Olomouc, Czech Republic (collared flycatcher, tawny pipit)
- José A. Alves, University of Aveiro, Portugal (European bee-eater)
- Franz Bairlein, Institut für Vogelforschung "Vogelwarte Helgoland", Wilhelmshaven (wheatear)
- Oskars Keišs, Institute of Biology, University of Latvia (common starling)
- Petr Procházka, Institute of Vertebrate Biology, Czech Republic (great and common reed warblers)
- Martin Schulze, NABU Sachsen-Anhalt Regionalverband Merseburg-Querfurt (European bee-eater)
Schweizerischer Nationalfonds (SNF, Hoopoe)
Wolfermann-Nägeli Stiftung (Alpine Swift)
Rosmarie und Armin Däster-Schild Stiftung (Alpine Swift)
Stiftung Accentus (Hoopoe)
Broad-scale patterns of the Afro-Palaearctic landbird migration.
Range-wide migration corridors and non-breeding areas of a northward expanding Afro-Palaearctic migrant, the European Bee-eater Merops apiaster.
A full annual perspective on sex-biased migration timing in long-distance migratory birds.
Migration, wing morphometry and wing moult in Spanish and House Sparrows from the eastern Balkan Peninsula.
Linking events throughout the annual cycle in a migratory bird?non-breeding period buffers accumulation of carry-over effects.
Loop migration, induced by seasonally different flyway use, in Northern European Barn Swallows.
Spatiotemporal Group Dynamics in a Long-Distance Migratory Bird.
What makes Alpine swift ascend at twilight? Novel geolocators reveal year-round flight behaviour.
Cold spell en route delays spring arrival and decreases apparent survival in a long?distance migratory songbird.
Dependencies in the timing of activities weaken over the annual cycle in a long-distance migratory bird.
Timing is crucial for consequences of migratory connectivity.
Breeding latitude leads to different temporal but not spatial organization of the annual cycle in a long-distance migrant.
Shifts in vegetation phenology along flyways entail varying risks of mistiming in a migratory songbird.
Repeatability of individual migration routes, wintering sites, and timing in a long-distance migrant bird.
Timing of migration and residence areas during the non-breeding period of barn swallows Hirundo rustica in relation to sex and population.
Directional shifts in migration pattern of rollers (Coracias garrulus) from a western European population.
Individual migration timing of common nightingales is tuned with vegetation and prey phenology at breeding sites.
Variable detours in long-distance migration across ecological barriers and their relation to habitat availability at ground.
Strong migratory connectivity and seasonally shifting isotopic niches in geographically separated populations of a long-distance migrating songbird.
First evidence of a 200-day non-stop flight in a bird.
Short-distance migration of Wrynecks Jynx torquilla from Central European populations.
Year-Round tracking of small Trans-Saharan migrants using light-level geolocators.
The natural link between Europe and Africa - 2.1 billion birds on migration.
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 di Corona, la maggior parte dei nostri dipendenti si trova nei loro uffici di casa. Vi preghiamo di comprendere che non possiamo elaborare tutte le richieste di informazioni immediatamente. 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