Big Birds
VulcanSpirit
Richard & Alison Brunstrom
Thu 9 Oct 2014 15:34
Australia has lots of birds (about 800 species) and amongst them are a few
bigger ones that we wanted to see, most famously the flightless emu Dromaius
novaehollandiae. Here is one we found messing about:
Emus are a bit smaller than ostriches which they clearly resemble and
they’re quite widespread in Australia, particularly in the Outback. Their
lineage is ancient, and it’s obviously no coincidence that all the southern
lands contain large flightless birds: Australia has the emu and the cassowary,
Africa the ostrich, NZ had moas, Madagascar had Elephant Birds and South America
still has rheas – but their ancestry is a real puzzle. Clearly the ancient
supercontinent of Gondwana is in the picture somewhere, but it’s more
complicated than might at first appear. Kiwis for instance have recently been
shown genetically to be most closely related to the extinct Madagascan Elephant
Birds, and must have flown to NZ before becoming flightless, while ostriches
originated in India after Gondwana split up, rode India until it collided with
Asia, got off and walked round to Africa where they are now found. Zoogeography
is fascinating! (to me, anyway, and it’s my Blog).
And here is another biggish bird, the Australian Bustard Ardeotis
australis hurrying off into a canefield:
Enough birds for a while.
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