So, they seem to be all over the place.
Here in Brussels we have a ringnecked parakeet population of about 2000 couples. It started from a small zoo near the atomium that closed down in 1980. They are detrimental to the local fauna but way beyond control now.
In the South of the city (Ukkel), there is another parakeet species gone feral (monk parakeet? don't know the E. name) The birds build large weaved nests, like multifloored buildings.
Weird sight in spring.