Tony Russell asked about some Long-billed Corellas that he recorded at Lake
Joondalup in Perth.
I am fairly certain that Allan Burbidge will reply to this, as he and John
Blyth have been studying the spread of Little and Long-billed Corellas
through Perth. They organise two or more "corella counts" each year at the
known locations.
Long-billed Corellas are now common in Perth, despite what the field guides
(don't) mention. But field guides don't seem to keep up to date with
ferals. Not their fault as I suspect they are not formally reported. This
will be an advantage of the new Atlas which will give an update of the
distributions.
I have always wondered whether the increasing Little Corellas and Galahs in
Perth are from introduced / escaped stock, or they have spread into the
metro area from surrounding areas.
Other ferals established in Perth that can be found if you know where to
look (but may not be in the field guides?) include Rainbow Lorikeet
(abundant), Red-browed Finch (localised), Goldfinch (very few),
Chestnut-breasted Mannikin (fairly common at a few locations),
Sulphur-crested Cockatoo (very few at one location - dying out?).
Then there are the standard Perth ferals such as Laughing Kookaburra,
Laughing Turtle-dove, Spotted Turtle-dove, Rock Dove, plus your ducks,
geese, etc. Plus close to Perth there are Mute Swan, Indian Peafowl and
Common Pheasant.
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