Nutritional deficiencies are endemic in pet parrots, with seed-only diets causing preventable disease and premature death in birds capable of living 50-80 years.
Parrots fed exclusively on seeds are slowly malnourished throughout their lives, accumulating nutritional deficits that manifest as disease and shortened lifespan. This represents a pervasive and largely preventable welfare harm affecting millions of pet parrots. The difficulty of transitioning established seed-eating birds to pellets and fresh foods is real, but the welfare benefit justifies the effort. Diet improvement is one of the highest-impact welfare interventions available to parrot owners.