OMIA:002106-13146 : Feather, abnormal growth in Melopsittacus undulatus (budgerigar)

Categories: Integument (skin) phene

Mendelian trait/disorder: yes

Mode of inheritance: Probably autosomal recessive

Considered a defect: yes

Key variant known: no

Species-specific name: Feather duster disease, chrysanthemum disease

Species-specific description: Affected animals present with continuous growth of flight, tail and contour feathers and have a reduced live expectancy due to malnutrition.

Inheritance: Oser and Berens von Rautenfeld (1977) report that pedigree analysis from data provided by two German budgerigar breeders support previous suggestions of a recessive mode of inheritance.

Clinical features: Affected birds appear larger in size from as early as 10-14 days of age. As fledglings, their feathers are longer compared to other birds and feather growths continues leading to an inability to fly, obstructed vision and premature death due to severe malnutrition (Oser and Berens von Rautenfeld 1977). The animals are unable to make the characteristics sounds of budgerigars (Perry et al. 1991).

Cite this entry

Nicholas, F. W., Tammen, I., & Sydney Informatics Hub. (2017). OMIA:002106-13146: Online Mendelian Inheritance in Animals (OMIA) [dataset].


Note: the references are listed in reverse chronological order (from the most recent year to the earliest year), and alphabetically by first author within a year.

1994 Gerlach, H. :
[Breed-dependent anomalies in ornamental birds]. Tierarztl Prax 22:319-23, 1994. Pubmed reference: 7940507.
1991 Perry, R.A., Gill, J., Cross, G.M. :
Disorders of the avian integument. Vet Clin North Am Small Anim Pract 21:1307-27, 1991. Pubmed reference: 1767477. DOI: 10.1016/s0195-5616(91)50141-8.
1977 Oser, G., Berens von Rautenfeld, D. :
Langfedrigkeit als Anomalie beim Wellensittich. Prakt Tierarzt 58:552, 1977.

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  • Created by Imke Tammen2 on 19 May 2017