orange-bellied parrot

Dear all

This thread made me check my bird books to see which mention the
orange belly on some Turquoise Parrots and Blue-winged Parrots,
both of which might be confused with Orange-bellied Parrots.  

>From my editions we get the following mentions of orange
bellies:

                     Blue-winged           Turquoise

Morecambe              No mention         old either sex may
Simpson&Day (5)        male may have      male may have
Pizzey&Knight          male may have      old either sex may 
Slater                   "other grass parrots show orange"
Schodde&Tidemann       No mention         No mention

I think Pizzey and Knight is the only one to say the orange
belly may not be visible on Orange-bellied Parrots.  

Michael Norris
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