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In issue 309 -
When an Older Parrot Has Never Learned Skilful Flight – Complete Psittacine by Eb Cravens
In issue 309 -
Scarlet Macaws – were they really bred by indigenous people in the 12th century? Rosemary Low asks the question
In issue 309 -
Understanding the link between nutrition, hormonal behaviours and the avian endocrine system, Part 1 – The Holistic Parrot by Leslie Moran
In issue 309 -
The Yellow-eared Parrot – continues to expand its range in Colombia. By David Waugh, Correspondent, Loro Parque Fundación
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 The October 2023 edition of Parrots magazine (issue 309) will be available to download from 13th September via a link which will be emailed to subscribers. Single copies will be available from our online shop. You can save money by subscribing – find out more here.

Rosellas - their geographical origins

Rosellas - Parrots magazine

by Robert Alison

The Rosellas (Platycercus sp.) comprise an extraordinarily colourful and intelligent complex of Australian psittacids whose evolutionary development is compelling and complicated. Sophisticated genetic sequencing research at the University of New South Wales indicates all Rosellas probably derived from a single ancestral type 18-143 million years ago. The divergence was apparently quite slow.

Eventually, geographically distinct sub-populations developed. The inter-relationships among those sub-groups have been the focus of substantial scientific investigation that, so far, has disclosed some perplexing anomalies.

One of the most intriguing findings concerns the so-called ‘ring’ species - the P. elegans group whose rare evolutionary path has sparked a great deal of scientific scrutiny. “Ring species are reproductively isolated forms connected by a chain of intermediate populations,” according to researchers Daren and Jessica Irwin and Trevor Price.

Read more in the magazine…




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