The Ringing and Monitoring Station Mouth of Caset has been active for some time. This is the structure located in thepass of the same name near Monte Tremalzo, to be precise in the Municipality of Ledro (province of Trento). Here are the latest updates made public on Facebook: "The arrival of migrants in October, typically gregarious, makes the number of ringed birds take off, which in recent days have always exceeded 500.
With these numbers, the likelihood of catching footed birds also increases a foreign ring and so it has been: 3 foreign recaptures carried out so far. It is about 3 siskins: one with a Spanish ring (San Sebastian), one Slovenian and the other Estonian! Yet another confirmation of the role of the Caset crossing for birdsi that follow the so-called Italian-Hispanic route".