Rule out medical first
Because plucking is so often driven by a physical problem â parasites, skin infection, disease or pain â the first step is always an avian vet exam. Treating the environment will not help if there is an underlying medical cause.
Common non-medical causes
Once medical issues are ruled out, the usual culprits are boredom, stress, a poor (seed-heavy) diet, hormones and dry skin. More foraging, a better diet, routine and bathing all help.