That just passed was a day of big emotions permanence in Mouth Caset: first a small boy with a Swedish ring, which with its few grams of weight has already left behind more than 2.000 km of road, then a new species for the station (and second signaling for Trentino)! When they pulled it from the nets, the operators hardly believed their eyes: a female of Bluetail!
This species, which nests in forests from Finland to Japan, usually spends the winter in Southeast Asia. For some years, however, perhaps even after a numerical increase in the westernmost populations, observations also in Europe and Italy are becoming more frequent, often attracting crowds of bird watcher attracted by beauty (the male has a bright blue plumage) and exceptional sighting.