Two new INBO tracking studies (zomertortel and kwartelkoning) use GM tags. I believe those refer to Global Messenger (https://www.gm-tracking.com/).

• Data: Global Messenger is listed under Movebank supported live feeds
• Metadata: a spreadsheet should be created for the metadata, cf. Ornitela or Interrex.
• Metadata translation: a gm_to_movebank.Rmd should be created to translate spreadsheet metadata to Movebank reference data. Inspiration can be taken from Ornitela or Interrex.