It is nearly impossible to tell the difference based on appearance alone.
Why
* Color: Albino birds lack pigmentation, with white feathers and pink eyes, eliminating usual color cues like the male's neck ring.
* Size: No reliable size difference.
* Behavior: Vocalization differences are not consistent.
How to Determine Sex
* DNA Testing: Most reliable, using blood or feather samples.
* Veterinarian Examination: May identify subtle pelvic bone differences, but not always accurate.
Accept your albino Indian ringneck as the individual bird it is, regardless of sex.