Modelling the timing of migration of a partial migrant bird using ringing and observation data: a case study with the Song Thrush in Italy

The study of the timing of migration is fundamental to the understanding of the ecology of many bird species and their response to climate change, and it has important conservation and management implications e.g., for assessing the hunting seasons according to the EU Directive 2009/147/EC (Birds Di...

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Bibliographic Details
Published in:Movement ecology 2023-08, Vol.11 (1), p.47-47, Article 47
Main Authors: Ambrosini, Roberto, Imperio, Simona, Cecere, Jacopo G, Andreotti, Alessandro, Serra, Lorenzo, Spina, Fernando, Fattorini, Niccolò, Costanzo, Alessandra
Format: Article
Language:English
Subjects:
Analysis
Biogeography
Bird migration
Case studies
Citizen science data
Climate change
Environmental conditions
Global temperature changes
Hunting
Migration phenology
Migratory birds
Phenology
Protection and preservation
Ringing data
Science
Short-distance migration
Thrushes
Turdus philomelos
Weddings
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Summary:The study of the timing of migration is fundamental to the understanding of the ecology of many bird species and their response to climate change, and it has important conservation and management implications e.g., for assessing the hunting seasons according to the EU Directive 2009/147/EC (Birds Directive). We developed a new method for the analysis of ringing data (both first capture and re-encounters) and citizen science observations, to assess the timing of pre- and post-nuptial migration of birds. This method was tested on the Song Thrush Turdus philomelos, using i) the Bird Ringing Database hosted by the ISPRA Italian Ringing Centre from the whole Italian peninsula, the three closest large islands (Sicily, Sardinia and Corsica), and Canton Ticino (Switzerland) and ii) the eBird data for the same study area. The results from both datasets consistently showed that pre-nuptial migration starts during the first 10-day period of January (Jan 1) in some central and southern areas of the Italian peninsula, in central Sicily, southern Sardinia, and Corsica. The onset of migration occurs on Jan 2 in the rest of central and southern Italy, Sicily and Sardinia, and western Liguria, while it starts later in the north-eastern Alps, up to Mar 3. The end of post-nuptial migration is more synchronous, occurring on Nov 1 across most of Italy, slightly earlier (Oct 3) in northern Italy and later (Nov 2) in Sicily. The uncertainty of the estimated dates was
ISSN:2051-3933
2051-3933
DOI:10.1186/s40462-023-00407-z