References

Collar, N 1997.  Family Psittacidae (Parrots).  In: del Hoyo, J et al (eds.)  Handbook of the Birds of the World, Vol. 4 Sandgrouse to Cuckoos.  Lynx Edicions, Barcelona: 280–477.

Birkhead, T, Schulze-Hagen, K and Palfner, G (2003).  The colour of birds: Hans Duncker, pioneer bird geneticist. Journal fiir Ornithologie, 144: 253–270.

Elliot, FS and Brooks, EW (1999).  Budgerigar Matings and Colour Expectations (11th edition, revised).  The Budgerigar Society, Northampton.

Fisher, CT and Warr, FE (2003).  Museums on paper: library and manuscript resources.  Bulletin of the British Ornithologists’ Club, 123A: 136–164.

Gould, J 1840-1848. Birds of Australia, Vols. 1-7.  (Budgerigar appears in Vol. 5, plate 44).

Rogers, CH and Blake, J (2001).  World of Budgerigars (5th edition, revised). Northbrook Publishing Ltd., West Sussex.

Taylor, TG and Warner, C (1986).  Genetics for Budgerigar Breeders (2nd edition).  The Budgerigar Society, Northampton.

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