Data from: Barometer logging reveals new dimensions of individual songbird migration
| Main Authors: | Sjöberg, Sissel, Pedersen, Lykke, Malmiga, Gintaras, Alerstam, Thomas, Hansson, Bengt, Hasselquist, Dennis, Thorup, Kasper, Tøttrup, Anders P., Andersson, Arne, Bäckman, Johan |
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| Format: | info dataset Journal |
| Terbitan: |
, 2018
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/4950828 |
Daftar Isi:
- Recent advances in tracking technology are based on the use of miniature sensors for recording new aspects of individual migratory behaviour. In this study, we have used activity data loggers with barometric and temperature sensors to record the flight altitudes as well as ground elevations during stationary periods of migratory songbirds. We tracked one individual of red-backed shrike and one great reed warbler along their autumn migration from Europe to Africa. Both individuals performed their migration stepwise in travel segments and climbed most metres during the passage across the Mediterranean Sea and the Sahara Desert and least metres during the first flight segment in Europe. The great reed warbler reached its highest flight altitude of 3950 m above sea level (a.s.l). during the travel segment from Europe to west Africa, while the red-backed shrike reached 3650 m a.s.l as maximum flight altitude during its travel segment from Sahel to southern Africa. Both individuals used both lowlands and highlands for resting periods along their migrations. Furthermore, temperature decreased with increasing altitude during migratory flights for both individuals, highlighting the potential to determine flight duration from temperature measurements. Finally, we discuss how barometric data could be used to investigate birds' responses to changes in air pressure as a cue for departures on migratory flights. This new technique, i.e. using a miniature data logger with barometric pressure sensor to estimate flight altitudes and ground elevations, will open up new avenues for research and importantly advance our understanding on how small birds behave during migratory flights.
- Accelerometer, pressure and temperature dataData files in plain text containing detailed accelerometer, pressure and temperature data for the red-backed shrike and the great reed warbler. First column is a timestamp. Act0 means number of sequences that scored 0 during the preceding hour (12 measurement sequences). Next column Act1 to Act5 follow the same way. Column "check" is the sum of all activity counts and should be 12 if sampling worked as intended. "Temp" gives temperature in °C and "P" barometric pressure in mbar. Data for the red-backed shrike are given first (indicated with rbs), and the same columns are repeated afterwards for the great reed warbler (indicated by grw). See doi: 10.1111/jav.01821 for details on data collection and compilation.data to dryad.xlsxFunding provided by: National Science FoundationCrossref Funder Registry ID: http://dx.doi.org/10.13039/100000001Award Number: no