Ino Budgerigar, Lutino & Albino Genetics
Sex-linked recessive · Removes all melanin · Lutino (green base) / Albino (blue base) · Red eyes
TL;DR
Ino is a sex-linked recessive mutation in budgerigars that removes all melanin pigment from the feathers. On a green-series base the result is a pure-yellow bird called Lutino; on a blue-series base the result is a pure-white bird called Albino. Both have red eyes. In budgies, Ino sits on the Z chromosome, this is critical because in lovebirds the Ino gene is autosomal, meaning lovebird and budgie Ino calculators are not interchangeable. Cocks can be split for Ino; hens cannot.
What is Ino in budgerigars?
Ino removes all eumelanin (black) and phaeomelanin (brown) pigments from the bird's plumage and eyes. The yellow base pigment (psittacin) is retained on green-series birds, producing the rich golden-yellow Lutino. On blue-series birds, which already lack the yellow base pigment, the result is pure white, Albino. In both forms, the absence of melanin means the eyes appear red (light reflecting off the blood vessels of the retina), and the legs and beak are typically pale.
Why is Ino sex-linked in budgies but autosomal in lovebirds?
This is one of the most important differences in psittacine genetics, and it trips up many breeders who cross-apply lovebird inheritance rules to budgies. In budgerigars, the Ino locus sits on the Z sex chromosome, making it sex-linked recessive. In peach-faced lovebirds, the Ino locus sits on an autosome, making it autosomal recessive. The visible phenotype (full melanin removal, red eyes) looks similar in both species, but the inheritance behaviour is fundamentally different.
Practical consequence: a hen budgerigar can never be "split for Ino." She is either visual Ino (Lutino or Albino) or normal. In contrast, lovebird hens absolutely can be split for Ino, the gene is autosomal in their species.
Pairing Outcomes, Quick Reference
| Pairing (cock × hen) | Cock offspring | Hen offspring |
|---|---|---|
| Visual Ino × Normal | 100% Split Ino | 100% Visual Ino |
| Split Ino × Normal | 50% Normal / 50% Split | 50% Normal / 50% Visual |
| Normal × Visual Ino | 100% Split Ino | 100% Normal |
| Visual Ino × Visual Ino | 100% Visual Ino | 100% Visual Ino |
| Split Ino × Visual Ino | 50% Visual / 50% Split | 50% Visual / 50% Normal |
Lutino vs Albino, what's the difference?
They are the same gene producing the same effect, only the base colour series differs:
- Lutino: Ino on a green-series base. The yellow psittacin pigment shows through unmodified by melanin. Body is pure golden-yellow, often with subtle "ghost" markings.
- Albino: Ino on a blue-series base. With both melanin and yellow pigment absent, the bird is pure white. Includes Sky Albino, Cobalt Albino, and Mauve Albino (these look almost identical to the human eye but track different blue-series alleles for further breeding).
A Lutino paired with an Albino can produce either Lutino or Albino offspring depending on which blue/green-series alleles the chick inherits. The calculator handles this correctly because it tracks base colour and Ino as separate gene loci.
Ino combinations breeders watch for
- Opaline Ino: Opaline is hidden by Ino because all melanin (which Opaline rearranges) is gone, but the Opaline allele still passes to offspring.
- Cinnamon Ino: The classic Lacewing crossover product. When Cinnamon and Ino sit on the same Z chromosome, the visible result is Lacewing, yellow/white body with brown wing markings (instead of the normal Ino's complete absence of pattern). See the dedicated Lacewing entry on the blog.
- DF Spangle Lutino lookalike: DF Spangle is sometimes mistaken for Lutino. The tell is the eye colour, Lutino has red eyes, DF Spangle has normal dark eyes.
History & origin
The first recorded Ino budgerigars were documented in continental Europe in the 1930s, with the mutation spreading rapidly through UK and US aviaries by the 1940s. Lutino became commercially popular ahead of Albino because the rich golden-yellow was visually striking on its own. Both are now among the most common pet budgerigar mutations worldwide.
Predict any Ino pairing instantly
Try the Budgerigar Genetics Calculator: pick the cock and hen base colours, add Ino (Visual or Split for cocks, Visual or Normal for hens), and the engine outputs the sex-separated offspring odds in seconds, including Lutino / Albino renaming on the relevant base colours.
Open the Calculator →References
- Martin, T. (2002). A Guide to Colour Mutations and Genetics in Parrots. ABK Publications, Tweed Heads NSW. ISBN 978-0-9577024-7-9.
- Rogers, C. H. (revised by Blake, J.). World of Budgerigars. Beech Publishing House. ISBN 978-1-85736-270-1.
- Onsman, I. Pigmentation in Psittacines. MUTAVI Research & Advice Group.
- Wikipedia: Lutino mutation.
© 2026 KinBird Aviary · budgerigargenetics.com