"Dave Poole" wrote in message ...(big snip)

Ring-necks are highly gregarious birds and nothing if not resourceful.
Just a few in any one area will quickly find each other, form a small
flock and if suitable nesting sites are present, establish a viable
population.

No doubt that the sound of one will attract any other, we see it constantly
at the Swan Sanctuary next to our allotments.
There they have cages of unwanted/caught Love Birds, Cockatiels, Budgies
amongst others, and we often see loose/lost ones flying in attracted by the
sound of their fellows in the cages. They normally end up in the cages
having been netted when they land on or next to the cage to socialise with
members of their own species.
What with the Parakeets flying around and these occasional other birds, as
well as Trumpeter and Whooper Swans and various other Parrots/Mynahs from
the Swan Sanctuary constantly making a racket, our allotment sounds more
like a zoo than England. :-)

Incidentally I remember pair of drab grey Budgies that used to nest on an
allotment site in the Feltham, Middx. area for years around the mid 1950's.

--
Regards
Bob
in Runnymede, 17miles west of London, UK