Data from: Migratory connectivity and effects of winter temperatures on migratory behaviour of the European robin Erithacus rubecula: a continent-wide analysis
Data files
Jan 13, 2017 version files
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Abstract
1. Many partially migratory species show phenotypically divergent populations in terms of migratory behaviour, with climate hypothesized to be a major driver of such variability through its differential effects on sedentary and migratory individuals.
2. Based on long-term (1947–2011) bird ringing data, we analysed phenotypic differentiation of migratory behaviour among populations of the European robin Erithacus rubecula across Europe.
3. We showed that clusters of populations sharing breeding and wintering ranges varied from partial (British Isles and Western Europe, NW cluster) to completely migratory (Scandinavia and north-eastern Europe, NE cluster).
4. Distance migrated by birds of the NE (but not of the NW) cluster decreased through time because of a north-eastwards shift in the wintering grounds. Moreover, when winter temperatures in the breeding areas were cold, individuals from the NE cluster also migrated longer distances, while those of the NW cluster moved over shorter distances.
5. Climatic conditions may therefore affect migratory behaviour of robins, although large geographical variation in response to climate seems to exist.
Data from Robin migration and climate change
Variable name description:
ID = ID for individual robins (progressive numbers);
Lat2 = Latitude of the site where Robin was recovered during wintering;
Lon2 = Longitude of the site where Robin was recovered during wintering;
Lat1 = Latitude of the site where Robin was recovered during breeding;
Lon1 = Longitude of the site where Robin was recovered during breeding;
Year = Year when a robin was recovered in winter (from November of year i to February of year i + 1);
Country = Country where a robin was observed during the breeding period;
gridID = ID of the 2.5 ° lat x 2.5° lon cell where the robin was observed during the breeding period;
Cluster = Cluster to which the robin belong, as assessed by migratory connectivity analysis;
DistMig = migration distance calculated as the great-circle (orthodromic) distance between breeding and wintering position (km);
CminT = temperature anomaly for the cell where the robin was observed breeding during the winter when it was recovered in winter (°C);
CmaxTS = temperature anomaly for the cell where the robin was observed breeding during the summer when it was recovered in winter (°C);
CminAT = temperature anomaly for the cell where the robin was observed breeding during the autumn when it was recovered in winter (°C);
CminT1 = temperature anomaly for the cell where the robin was observed breeding during the winter preceding the one when it was recovered in winter;
pop.index = population index in the country where a robin was observed breeding in the year when it was recovered in winter (index in the reference year = 0);
Adult = whether a robin was adult or young when recovered in winter;
ErirubDryad.csv
