BirdLife Malta had some news last week:
A study by the EU LIFE+ Project on Bird Migration and Trapping revealed that the number of finches recorded in the Maltese countryside increased dramatically in the first year of the trapping ban in 2009, compared to 2008 when finch trapping was still permitted.
And the big picture that BirdLife Malta paints?:
Geoffrey Saliba, BirdLife Malta Campaigns Coordinator said; “The increases in the number of finches seen last year and the confirmed breeding of two species of finch show that given the chance, these birds could also breed in the Maltese islands. Finches are common breeders in Europe and they also breed on other small central Mediterranean islands.”
So you see, trapping of wild birds is illegal for a reason.