Did anyone mention this? A manuscript here: http://researchrepository.murdoch.edu.au/4397/
of a recent study published
http://www.sciencedirect.com/science/article/pii/S1055790311001503
on detailed genetic study of cockatoos. Interesting is the cladogram, with Palm Cockatoo as early offshoot within the Cacatuinae (!), and gang gang and galah as sister taxa – the authors suggest that placing the last two in a single genus may be warranted (and there’s an interesting name change, Gang Gang at 1803 is older than Galah (1817), but Eolophus (1817) predates Callocephalon (1837)…so I guess we’d get Eolophus fimbriatus…?) Cockatiel is basal to all other taxa.
Cas
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