Thanks Christine. Here are some further considerations. Before eBird, there was a small population of hybrids in the Canberra area, perhaps of aviary origin. It is not known whether
there were also any ‘pure’ LBCs. The hybrids came to be recorded as Long-bills, in the COG annual bird reports and in Birdata for example. No doubt many observers included them as such in personal records. The introduction in eBird of the ‘hybrid’ option
created a third category, requiring a decision whether a particular record was of a hybrid or a pure LBC. While some specimens we see today seem indistinguishable from a pure LBC, it is difficult to be certain going by visual evidence alone. It is a matter
for the observer and reviewer to arrive at the appropriate category for eBird purposes. The category for other purposes is a different issue.
To supplement this note I’ve prepared the attached graphic. According to Birdata, the Bowen Park site is the prime spot for LBCs in the Canberra area. Incidentally, I am cautious
about making use of field guides on this issue, because (unless photos) the illustrations are usually diagrammatic, unlike the ones in Forshaw & Cooper editions, which show particular identified specimens.
From: Canberrabirds <>
On Behalf Of Christine via Canberrabirds
Sent: Monday, January 8, 2024 8:28 PM
Cc: Canberra birds <>
Subject: Re: [Canberrabirds] eBirders! Take care with Long-billed Corella identification
Hi all,
second try as my photos made my email over the limit.
It is indeed a tricky one, as by some definitions I would think there has never been a Long-billed Corella in the ACT, but by the definition and illustrations in many Field Guides there are,
by now, quite a few.
For your interest, here are a couple of photos I took today at Lake Ginninderra.
Quite apart from the Little Corellas in a nearby tree were five individuals together in a seperate tree, each with plenty of pink/red, and it appeared to be a family group. Three together on
one branch, the two on the outside were begging, and the one in the centre fed them (first photo). Just above them two more individuals with the same colouring (second photo).
ps It was raining, so even worse than usual photos.
|
Attachment:
Description: hybrid corellas.jpg
ATT00001.txt
Description: ATT00001.txt
|
