What were the dual primary reasons for the widespread commercial and agricultural persecution of the species?

Answer

Damage to crops and the high value of their brightly colored feathers for the millinery trade.

The decline was driven by farmers shooting them for damaging crops and the commercial exploitation by the millinery trade desiring their brightly colored feathers.

What were the dual primary reasons for the widespread commercial and agricultural persecution of the species?
speciesbirdextinctioncharacteristicParakeet