canberrabirds

RE: hybrid rosella

To:
Subject: RE: hybrid rosella
From: "Stuart Harris" <>
Date: Sun, 09 Sep 2007 23:40:21 +1000
Haven't seen a hybrid Crimson/Eastern Rosella for years and was glad I had my camera with me at 'Bibaringa' on the Cotter Road yesterday. Can anyone tell me what the correct scientific name for this pretty creature is? Platycercus elegans eximius elegans? Is there a common rule for naming hybrids?

A link to larger pics of this fascinating hybird is:

m("N00/1345050629/","//www.flickr.com/photos/50364443");">http:

Thanks
Stuart Harris





"Everything is relative, everything is valid!"





From: Con Boekel <>
To: COG list <>
Subject: [canberrabirds] Australian Raven identification - an observation and two questions
Date: Sun, 09 Sep 2007 19:41:21 +1000

In various field guides the wing flick is given as an aid to identifying the Little Raven. Earlier last month I noted what I took to be repetitive wing flicks in a bird which, on all other features, I was certain was an Australian Raven. It had the distended throat hackles, horizontal stance when making what I took to be the the territorial call, the bill was large, there was a slightly raised area to the rear of the head, and the calls were just right. Observing other Australian Ravens I noticed the same thing from time to time. It puzzled me. This morning I was fortunate to have an Australian Raven only a couple of metres away, making what I took to be the horizontal territory call. I observed closely. There was movement with the call - but the wings were actually held still. The tail was moving up and down in cadence with the call. My mind, ready to check for wing flicks in corvids, had interpreted the opening and closing of space between the tail and the wings as 'wings flicking'. I should have been seeing tails moving up and down.
My questions are:
(1) Has anyone else noticed this behaviour?
(2) Does anyone know whether raising and lowering of the tail is diagnostic for Australian Ravens?
Con

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