136 How to Sex Cage Birds. 



the Museum justifies the latter statement, one sexed male showing 

 a large patch of green on the nape ; but, at the same time, it is a 

 significant fact that the only specimen in which there is a small 

 rounded green spot on the red is the only one sexed as a female. 



Yellow-mantled Parrakeet (Platycercus splendidus). 



• This rarely imported species probably differs in the same way as 

 the other species — in the fuller beak of the male when viewed from 

 above. 



Stanley Parrakeet ( Platycercus icterotis). 



No examples in the Collection were sexed, but, so far as I could 

 judge, the male shows less green in the plumage than the female, 

 and has a heavier beak. 



Pileated Parrakeet (Porphyrocephalus spurius). 



No specimens were sexed, but the more brightly coloured 

 examples possess the heavier beaks, and Count Salvadori says that 



the female is " duller and smaller." 



Barnard's Parrakeet (Barnardius barnardi). 



The male is larger than the female, brighter in colour, and 

 possesses a longer and more powerful beak. Count Salvadori says 

 (Catalogue of Birds, vol. xx. p. n59) : "Female. — Like the male, 

 only smaller and duller ; the back less bluish and more greenish." 



Bauer's Parrakeet (Barnardius zonarius). 



I found no sexed specimens, but the probable male is brighter 

 than the presumed female, has a blacker head, the beak less swollen 

 at middle, more regularly triangular, wider towards tip. 



Ykllow-naped Parrakeet (Barnardius semitorquatus). 



Count Salvadori simply describes the female as "smaller and 

 duller than the male." A comparison of the sexes shows that its 

 head is browner, and the green of its plumage decidedly deeper. 

 Its beak is much shorter, and slightly broader at the base. 



Red-vented Blue-bonnet Parrakeet (Psephotus hcemalorrhous). 



No specimens were sexed, but I regard the two last enumerated 

 in the Catalogue as representing the female ; their beaks are 

 altogether smaller and shorter than in the other examples. 



Yellow-vented Blue-bonnet Parrakeet (Psephotus xanthorrhous). 



Sexes not indicated in the Museum, but they probably differ as 

 in the preceding species, the female having a smaller beak than the 

 male. 



