I may be missing something here, but if 10 released individuals in the 1960s
expanded to 15,000+ in 40 years, trying to control the species would seem a
bit like 'Whistling in the wind'. You are never going to get back to
anything like a manageable figure.
The same expansion has happened here in the Sydney area with Long-Billed and
Little Corellas. When I arrived in Sydney in the early 1970s, according to
Simpson & Day, Long-Billed Corellas were restricted to western Victoria and
parts of S.Aust, and Little Corellas were inland birds. Yet here 35 years
on, both Corellas are easily the most common birds in South Penrith.
People have tried to control Common Mynahs for years, yet recently, I saw an
estimate that there are something like 200,000 around Sydney.
Here in Penrith, Rainbow Lorikeets are very common, but if attempts were
made to control them, how would the 'controllers' catch/kill Rainbow
Lorikeets without also catching Swift Parrots, Scaley-Breasted, Little and
Musk Loris, all of which are seen here from time to time?
South Penrith, NSW
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