Mauritius Olive White-eye

Overview

The Mauritius olive white-eye (Zosterops chloronothos) is a rare and localized passerine belonging to the family of white-eyes, recognized as Critically Endangered. It is one of only two white-eye species endemic to the island of Mauritius, the other being the Mauritius grey white-eye.

Identification

• Approximately 10 cm in length with dull olive-green upperparts and paler underparts.
• A conspicuous white ring surrounds the eyes.
• The belly and vent exhibit a distinct yellow hue.
• Males and females are similarly coloured.

Habitat

This species inhabits evergreen bushes and forests primarily within the Black River Gorges National Park and the Macchabée-Bel Ombre Biosphere Reserve. Following conservation efforts, it has also been reintroduced to Île aux Aigrettes, with its entire range confined to an area of approximately 25 km².

Diet

The bird feeds on nectar and insects. Its survival is intrinsically linked to the nectar of several endemic Mauritian flowers, meaning the decline of these specific plants due to invasive species has severely impacted the bird's food supply.

Did you know?

The bird is highly specialized, having evolved around the nectar of specific endemic flowers, so the introduction of non-native plant species has led to a shortage of food and a dramatic population decline. Conservation programs now require rescued chicks to follow a restricted diet of small nutrient portions every forty minutes to ensure their survival.