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Budgerigar (Melopsittacus undulatus) — Feather duster disease, chrysanthemum disease (hereditary; OMIA-verified species predisposition)

companion_species_health_feather_duster_disease_chrysanthemum_disease_pet-bird

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--- license: permission_granted topic_id: companion_species_health_feather_duster_disease_chrysanthemum_disease_pet-bird category: companion-species-health title: "Budgerigar (Melopsittacus undulatus) — Feather duster disease, chrysanthemum disease (hereditary; OMIA-verified species predisposition)" lang: en source: "OMIA (Online Mendelian Inheritance in Animals, University of Sydney) species-specific hereditary-disorder record, saved verbatim to source_file; C1 substring-verified. Pulled 2026-08-24 from local OMIA database dump." source_file: pdf-raw/species-health/pet-bird_feather_duster_disease_chrysanthemum_disease_4028.txt date_parsed: 2026-08-24 tokens_estimated: 229 verification: method: substring_match claims: 5 passed: 5 date: 2026-08-24 recovered: false path: companion-species-health/companion_species_health_feather_duster_disease_chrysanthemum_disease_pet-bird/01_companion_species_health_feather_duster_disease_chrysanthemum_disease_pet-bird.md source_document: "OMIA — Online Mendelian Inheritance in Animals (University of Sydney)" citation: authority: "OMIA — Online Mendelian Inheritance in Animals (University of Sydney)" title: "Budgerigar (Melopsittacus undulatus) — Feather duster disease, chrysanthemum disease (hereditary; OMIA-verified species predisposition)" url: "https://omia.org/OMIA002106/13146/" retrieved: "2026-08-24" ref: "OMIA species-specific hereditary-disorder records (omia.org), derived from local OMIA database dump; dataset: https://doi.org/10.25910/2AMR-PV70" doc_type: "academic animal-genetics database (species-specific disorder entries)" needs_review: false

verification_derived: method: derived_from_dataset source: "OMIA database dump (omia.xml, local); fields Gene/Variant/Article/OMIM" note: "Structured fields (gene, variant rsID/protein change, PubMed/DOI references, OMIM cross-link) extracted from OMIA dump and presented with first-hand values; not verbatim prose." verification_derived: method: derived_from_dataset source: "OMIA database dump (omia.xml, local); fields Gene/Variant/Article/OMIM" note: "Structured fields (gene, variant rsID/protein change, PubMed/DOI references, OMIM cross-link) extracted from OMIA dump and presented with first-hand values; not verbatim prose."---

Budgerigar (Melopsittacus undulatus) — Feather duster disease, chrysanthemum disease (hereditary; OMIA-verified species predisposition)

Source: first-hand OMIA (University of Sydney) species-specific hereditary-disorder record, saved verbatim to source_file; every claim below is a C1 byte-substring of it.

Claims

  • Species: Budgerigar (Melopsittacus undulatus)
  • Disorder: Feather duster disease, chrysanthemum disease
  • Mode of 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.
  • Summary: Affected animals present with continuous growth of flight, tail and contour feathers and have a reduced live expectancy due to malnutrition.
  • Clin feat: 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).

Evidence (references)

Derived from OMIA database dump (omia.xml, local); structured field, not verbatim prose. First-hand values below are verbatim substrings of the topic's pdf-raw/omia/<phene_id>.txt source file.

  • 1991. Disorders of the avian integument. Vet Clin North Am Small Anim Pract — PubMed:PMID1767477 | DOI:10.1016/s0195-5616(91)50141-8 — OMIA Phene_Article / Article
  • 1977. Langfedrigkeit als Anomalie beim Wellensittich. Prakt Tierarzt — OMIA Phene_Article / Article
  • 1994. [Breed-dependent anomalies in ornamental birds]. Tierarztl Prax — PubMed:PMID7940507 — OMIA Phene_Article / Article

Evidence (references)

Derived from OMIA database dump (omia.xml, local); structured field, not verbatim prose. First-hand values below are verbatim substrings of the topic's pdf-raw/omia/<phene_id>.txt source file.

  • 1991. Disorders of the avian integument. Vet Clin North Am Small Anim Pract — PubMed:PMID1767477 | DOI:10.1016/s0195-5616(91)50141-8 — OMIA Phene_Article / Article
  • 1977. Langfedrigkeit als Anomalie beim Wellensittich. Prakt Tierarzt — OMIA Phene_Article / Article
  • 1994. [Breed-dependent anomalies in ornamental birds]. Tierarztl Prax — PubMed:PMID7940507 — OMIA Phene_Article / Article

Sources

Budgerigar (Melopsittacus undulatus) — Feather duster disease, chrysanthemum disease (hereditary; OMIA-verified species predisposition)
companion-species-healthPMID 1767477

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