Il passero domestico è l'uccello dell'anno 2015 per ASPU/BirdLife Svizzera, rappresentata in Ticino da Ficedula, l'Associazione per lo studio e la conservazione degli uccelli della Svizzera italiana. La scelta serve ad attirare l'attenzione sul costante calo della popolazione di questa specie, ridottasi in alcune zone del paese anche del 40% rispetto al 1980 e in modo ancor più sensibile in grandi città estere, come Londra.
La colpa è della scarsità di spazi verdi e nutrimento adeguato. Si vuole quindi far capire "la necessità di favorire la natura fin nel cuore degli agglomerati, per il bene della biodiversità e delle società umane", stando a una nota diffusa lunedì. Oggi mancano i prati, e quindi gli insetti che costituiscono l'alimentazione preferita dai passeri, ma anche i luoghi adatti alla nidifcazione, come le cavità negli edifici.
pon/ATS
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