Yes Crimson x Eastern Rosella hybrids are not so uncommon (certainly in
Canberra). Though it is odd to happen that much, when both species are
common. Hybrids would appear more likely when one species is rare. These are
interspecific hybrids which are of course (normally) much less common that
hybrids between members of the same species, such as Crimson and Yellow
Rosella at the region where the two forms meet. The questions are about how
frequent these events are and whether the hybrids are able to attract a mate
and are fertile and form an intergradation zone. Typically in the case of
Crimson and Yellow Rosella they do as they are the same species so it is
debatable as to whether they should be called hybrids any more than
interracial people pairings. Crimson x Eastern Rosella are not the same
species. But the whole thing highlights that the context of species
boundaries and definitions is not always clear.
Philip
-----Original Message-----
From: Birding-Aus On Behalf Of
John Leonard
Sent: Thursday, 3 September 2015 7:39 AM
To:
Subject: X Breeding in the wild.
I don't know whether the Canberra suburbs qualify as 'the wild' but a male
crimson x eastern rosella has been around our patch for at least the last
ten years (same individual). It's intermediate in size between the two and
is very handsome e with its Crimson and yellow plumage. It hangs around with
a female eastern, but I have never seen them with young.
John Leonard
> On 2 Sep 2015, at 9:24 pm, Peter Ewin <> wrote:
>
> Barney,
> Crosses of Crimosn and Yellow Rosella are a regular occurrence in the
Albury-Wodonga region. I saw a mixed pair many years ago near teh Bandiana
Army Camp. The first house we lived in (near Nailcan Hill) often had mixed
pairs with an odd mix of young birds - some looked like Yellows, some
Crimsons and yes many looked like Adelaides). I only get Yellows in the
house we are now in (which is only about 200 metres away but closer to town
and further from eth bush). I only see Yellows in the street trees in the
CBD. At Beechworth only Crimsons are found.
> Not certain how much further upstream the Yellows extend, but once you
get into the serious mountains then only Crimsons occur.
> I vaguely recall seeing a mixed pair at Gundagai on the Murrumbidgee as
well, so probably where the foothills meet the river this occurs reasonably
regularly.
> The more interesting thing is the "Crimson" Rosella on Kangaroo Island in
SA, whereas the mainland are all Adelaide types.
> My parents near Murwillumbah on the north coast of NSW have for many years
had a hybrid male Eastern/Pale-headed breeding with a female Eastern. Don't
see many pure Pale-heads in the Tweed Valley, but they are more common on
the Gold Coast.
> Dad also reckoned he had wild Long-billed and Little Corellas near
Brunswick Heads where both species would be locally introduced.
> Cheers,
> Peter
>
>> From:
>> To:
>> Date: Wed, 2 Sep 2015 16:33:18 +1000
>> Subject: [Birding-Aus] X Breeding in the wild.
>>
>> I recently went back to Reedy Swamp at Shepparton where I photographed a
>> cock Yellow Rosella feeding a Crimson Rosella hen which
>>
>> he had called out of the hollow they were nesting in last year, I found
him
>> again feeding her but could not find any of last year's young around the
>> area.
>>
>>
>>
>> Is this a common occurrence and if so what are the colours of the young,
do
>> they look like Adelaide Rosella's which can vary from very light
>> (Yellowish)to
>>
>> dark colours (Reddish- Orange) in the orchards in the Adelaide Hills ?
>>
>> Do they interbreed further down the Murray or don't the Crimsons exist
>> further downstream ?
>>
>>
>>
>> I have seen plenty of Crimsons and Eastern crosses and there are several
>> pairs of Eastern x Pale-headed crosses on the Gold Coast.
>>
>>
>>
>> Galah X Corella used to be seen around Echuca years ago and there is a
>> flock of several birds of Galah x Corellas I photographed at Denmark W A
>>
>>
>>
>> Many Major Mitchells, Sulphur-crested Cockatoos and Corella crosses can
be
>> found in aviaries around the country including a Red-rumped X Adelaide
>> Rosella
>>
>> once bred by mistake in an aviary.
>>
>>
>>
>> Most Neophemas x breed in aviaries which is a pity and Princess have been
>> crossed with Regents In W A, Red-rumped and Mulgas will breed if kept in
the
>> same
>>
>> aviary which often happens in Zoos etc.
>>
>> Regents and Red-winged Parrots will interbreed also if housed with each
>> other.
>>
>> Barney.
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