Youtube video description:

Australia is home to some beautiful birds, but not all of the birds you see day to day, are locals. Introduced species are a huge problem but we seldom think about the guys that take to the skies. In this episode of bird security we're taking aim at some feathered fiends. First we’ll be looking at the "big five". The flying ferals who went from bird bath to bloodbath. Then we turn our attention to some of those lesser known arrivals. Who are they? How did they get here? And why they such c*nts?