MH_ANTWERPEN - Western marsh harriers (Circus aeruginosus, Accipitridae) breeding near Antwerp (Belgium) is a bird tracking dataset published by the Research Institute for Nature and Forest (INBO) . It contains animal tracking data collected by the LifeWatch GPS tracking network for large birds ( http://lifewatch.be/en/gps-tracking-network-large-birds ) for the project/study MH_ANTWERPEN , using trackers developed by the University of Amsterdam Bird Tracking System (UvA-BiTS, http://www.uva-bits.nl ). The study was operational from 2018 until 2022. In total 3 individuals of western marsh harriers ( Circus aeruginosus ) and 1 common buzzard ( Buteo buteo ) have been tagged in their breeding area near the city of Antwerp (Belgium), mainly to study their habitat use and migration behaviour. Data are periodically uploaded from the UvA-BiTS database to Movebank and from there archived on Zenodo (see https://github.com/inbo/bird-tracking ). No new data are expected. See Milotic et al. (2020, https://doi.org/10.3897/zookeys.947.52570 ) for a more detailed description of this dataset. Files Data in this package are exported from Movebank study 938783961 . Fields in the data follow the Movebank Attribute Dictionary and are described in <code>datapackage.json</code>. Files are structured as a Frictionless Data Package . You can access all data in R via <code>https://zenodo.org/records/10054153/files/datapackage.json</code> using frictionless . datapackage.json : technical description of the data files. MH_ANTWERPEN-reference-data.csv : reference data about the animals, tags and deployments. MH_ANTWERPEN-gps-yyyy.csv.gz : GPS data recorded by the tags, grouped by year. MH_ANTWERPEN-acceleration-yyyy.csv.gz : acceleration data recorded by the tags, grouped by year. Acknowledgements This dataset was collected using infrastructure provided by INBO and funded by Research Foundation - Flanders (FWO) as part of the Belgian contribution to LifeWatch. ; This version adds alt-project-id to the reference-data ...