****************** DATA PACKAGE: Ouwehand J, Both C Data from: African departure rather than migration speed determines variation in spring arrival in pied flycatchers. Journal of Animal Ecology http://dx.doi.org/10.5061/dryad.k6q68 ****************************** THE PACKAGE ACCOMPANIES: Ouwehand, J. & Both, C. 2016. African departure rather than migration speed determines variation in spring arrival in pied flycatchers. Journal of Animal Ecology. It contains a copy of the data files used to perform a geolocator impact assessment for this paper and the sunset and sunrise transitions-files used for geolocator analysis. Please, contact me if you have suggestions, find errors, inconsistencies, or any other bug in the file. As well, please let me know about your uses of this data and send manuscripts and reprints when available. ********************************** CONTENTS *********************************** All files are plain text files. 1. README.txt - This file. Including a description of the variables and the name of the accompanying publication. 2. return_in_2014.csv – Contains data on the return of pied flycatchers, Ficedula hypoleuca, that were studied at a breeding population in Drenthe (The Netherlands) in 2013 and that did or did not return locally to the population in 2014. Data is shown for birds deployed with geolocaters and without (controls). The file is comma delimited and has a header line with variable names: return2014, rnr, harness, device, sex, breeding. 3. timing_in 2013-2014.csv – Contains data on the timing of arrival and egg laying of pied flycatchers, Ficedula hypoleuca, that were studied at a breeding population in Drenthe (The Netherlands) in 2013 and that returned locally to the population in 2014. Data is shown for birds deployed with geolocaters and without (controls). The file is comma delimited and has a header line with variable names: relArr2013, relArr2014, relLay2013, relLay2014, rnr, device, loggerID, sex, harness, breeding 4. transitions.csv – Contains raw data on sunset and sunrise times (so called 'transitions') used to estimate longitude, movement and stationary periods. The file shows data of 27 solar geolocator-loggers deployed on pied flycatchers, Ficedula hypoleuca, in Drenthe The Netherlands (Longitude: 6.378, Latitude: 52.820) in 2013, using Intigeo-W50 made by Migrate Technology Ltd logger. Data was processed using the program BASTrack. The file is comma delimited and has a header line with variable names: timestamp, transition, loggerID, threshold, retardation. ******************************************************************************* All missing data are indicated by ‘NA’. Descriptions of variable names in file (2), (3) and (4) are given below. ******************************************************************************* Variable names and descriptions breeding Breeding status of a bird in 2013 (0=unpaired male, 1=breeding) device Deployed with a geolocator in 2013 (1=yes; 0=no, i.e. control) harness Harness type used to deploy the geolocator (LL=leg-loop harness, Full=full-body harness, control= no harness, because no logger deployed (i.e. device=0)). loggerID Unique identifier of a logger deployed on an individual bird relArr2013 Arrival day in 2013 (days relative to sex specific mean in 2013) relArr2014 Arrival day in 2014 (days relative to sex specific mean in 2014) relLay2013 1st egg laying day of females in 2013 (days relative to mean in 2013) relLay2014 1st egg laying day of females in 2013 (days relative to mean in 2013) retardation Retardation as used in BASTrack (in minutes) return2014 Observed return in 2014 (0=not observed; 1=observed) rnr Unique identifier of an individual bird sex Sex of a bird (f= female, m=male) threshold Light-level threshold values that was used to define the sunset and sunrise times timestamp Date and time values of the twilight event as defined in BASTrack in GMT (i.e. format= dd-mm-yyyy hh:mm:ss). All events were defined using the threshold and a darkness period of 4 hours. transition Twilight event (i.e. either sunset or sunrise) ******************************************************************************