Erano circa 320 e hanno pernottato sul Piano di Magadino: le cicogne bianche, quest'anno, hanno deciso di sostare in massa in Ticino durante il loro viaggio dal nord est europeo. Si sono distribuite tra l'ex cartiera di Tenero e i prati dell'aeroporto di Locarno.
Si tratta di un fenomeno normale, ma mai registrato in proporzioni simili, ha spiegato Gianni Marcolli, fotografo faunistico e collaboratore della stazione ornitologica svizzera. Purtroppo una di esse è incappata nei fili dell'alta tensione e - nonostante l'intervento dei volontari della Protezione uccelli selvatici - è morta.
Le migrazioni degli uccelli stanno cambiando. "Con il riscaldamento climatico anche le abitudini di questi animali stanno mutando perché ci sono alcune cicogne che svernano anche in Svizzera", ha aggiunto Marcolli. Lo stormo è ripartito martedì mattina, probabilmente verso la penisola iberica e il nord Africa.
CSI 18.00 del 21.08.18; il servizio di Luigi Frasa
RSI Ticino e Grigioni 21.08.2018, 23:33
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