What characteristic leads observers to sometimes perceive the Senegal parrot as rare compared to louder parrot species?

Answer

Their considerably quieter vocalizations.

The Senegal parrot's preference for high-pitched whistles and chattering over screeching means they blend into background noise more effectively, leading to a perceived rarity because they are less conspicuous than louder species.

What characteristic leads observers to sometimes perceive the Senegal parrot as rare compared to louder parrot species?
rarityspeciesbirdParrot