Unravelling migration routes and wintering grounds of European rollers using light-level geolocators

  title={Unravelling migration routes and wintering grounds of European rollers using light-level geolocators},
  author={In{\^e}s Catry and Teresa Catry and Jos{\'e} Pedro Granadeiro and Aldina M. A. Franco and Francisco Moreira},
  journal={Journal of Ornithology},
We used light-level geolocators to track the migratory journey of a globally near-threatened trans-Saharan migrant, the European roller Coracias garrulus, from its breeding grounds in Iberia to its wintering grounds in southern Africa. During autumn migration, birds followed the western African coast with lengthy stopovers within sub-Saharan countries before crossing the equatorial rainforests towards the wintering areas, mainly in Angola. Although based in only two tracked birds, comparison of… 
Disentangling Migratory Routes and Wintering Grounds of Iberian Near-Threatened European Rollers Coracias garrulus
The studied populations showed weak migratory connectivity, suggesting the confluence of birds from a wide range of breeding grounds in a restricted wintering area, and is suggested to target on defining precisely key areas for this species and identifying specific threats in them in order to develop an appropriate global conservation programme for the European Roller.
Migratory pathways, stopover zones and wintering destinations of Western European Nightjars Caprimulgus europaeus
Little is known about the wintering distribution of the European Nightjar Caprimulgus europaeus. We combined geolocator and GPS-logger data from different sites in Western Europe to analyse migration
Return migration of Common Cuckoos (Cuculus canorus) between breeding grounds in Hungary and wintering grounds in Africa as documented by non-PTT GPS technology
Abstract We tagged 12 adult Common Cuckoos (Cuculus canorus) with non-platform terminal transmitter (non-PTT) GPS-UHF telemetry at their breeding grounds in Hungary. One male and two female Cuckoos
Important areas for the conservation of the European Roller Coracias garrulus during the non-breeding season in southern Africa
The results suggest that Rollers from different origins (breeding populations) use separate, but overlapping, wintering areas and may have different habitat requirements, and therefore, population-specific conservation strategies in these areas might be needed to fully protect the species.
Ten years tracking the migrations of small landbirds: Lessons learned in the golden age of bio-logging
ABSTRACT In 2007, the first miniature light-level geolocators were deployed on small landbirds, revolutionizing the study of migration. In this paper, we review studies that have used geolocators to
Conservation ecology of the European Roller
Among temperate birds, two traits in particular are associated with current population declines; an association with farmed habitats, and the strategy of long-distance migration. The European Roller
Annual movements of four South American tyrant flycatchers: uncovering intratropical migration patterns
ABSTRACT Capsule Resident populations, and great variation in annual abundance, distance moved, and orientation of movements, were observed in four species of tyrant flycatcher. Aims To investigate
Insights into the migration of the European Roller from ring recoveries
The first international analysis of ring recovery data in the European Roller Coracias garrulus, a long-distance migrant of conservation concern, demonstrates the complementarity of ring recoveries to direct tracking, providing an insight into the migration of juveniles and non-breeding season mortality.
Quantifying population size of migrant birds at stopover sites: Combining count data with stopover length estimated from stable isotope analysis
A new method to quantify the total number of migrant birds using stopover areas hosting overlapping populations of local (breeding or wintering) and passage individuals of a given species and demonstrated that stopover length can be directly predicted from mean TSA values of birds sampled during migration, regardless of variations in migratory rate.
A pan‐European, multipopulation assessment of migratory connectivity in a near‐threatened migrant bird
The extent to which individuals from different breeding populations mix throughout the non‐breeding season (i.e. ‘migratory connectivity’) has important consequences for population dynamics and


An unknown migration route of the ‘globally threatened’ Aquatic Warbler revealed by geolocators
AbstractThe globally-threatened Aquatic Warbler (Acrocephalus paludicola) breeds in Europe and spends the northern winter in sub-Saharan West Africa. We attached 30 geolocators to breeding birds in
Migration Routes and Strategies in a Highly Aerial Migrant, the Common Swift Apus apus, Revealed by Light-Level Geolocators
It is demonstrated that new technology may drastically change views about migration routes and strategies in small birds, as well as showing the unexpected use of very limited geographical areas during migration that may have important consequences for conservation strategies for migrants.
Individual variation in migratory movements and winter behaviour of Iberian Lesser Kestrels Falco naumanni revealed by geolocators
Effective protection of roosting sites in both pre-migratory and wintering areas and maintaining grasshopper populations in Sahelian wintering quarters appear crucial in preserving this threatened migratory raptor across its African–Eurasian flyway.
Directional shifts in migration pattern of rollers (Coracias garrulus) from a western European population
Abstract Individual migrants often fly detours when travelling between breeding and non-breeding sites, resulting in specific changes in flight directions along a migratory leg. Western European
Tracking Long-Distance Songbird Migration by Using Geolocators
Migration routes of migratory songbirds to the Neotropics were mapped by using light-level geolocators mounted on breeding purple martins and wood thrushes and suggesting high connectivity of breeding and wintering populations.
Migration of the Common Redstart (Phoenicurus phoenicurus): A Eurasian Songbird Wintering in Highly Seasonal Conditions in the West African Sahel
ABSTRACT. Some species of long-distance migrant birds are thought to follow spatiotemporal patterns of high food availability during the non-breeding season, a strategy termed “itinerancy,” instead
New Discoveries in Landbird Migration using Geolocators, and a Flight Plan for the Future
— 211 — The Auk, Vol. 130, Number 2, pages 211−222. ISSN 0004-8038, electronic ISSN 1938-4254.  2013 by The American Ornithologists’ Union. All rights reserved. Please direct all requests for
Birds in Europe : population estimates, trends and conservation status
New review of bird conservation compiled by Ian Burfield and Frans van Bommel. In 1994 BirdLife International published the landmark "Birds in Europe: their Conservation Status" - the first ever
Accuracy of geolocation estimates for flying seabirds
The accuracy of GLS tags is more than adequate for tracking migration and breeding-season foraging ranges of pelagic species, and for identifying broad-scale habitat preferences, overlap and potential conflict with commercial fisheries.