quality:corruption
Zones by altitude

The island is divided into four major ecological zones, by altitude. Below 600 metres (2,000 ft) is the coastal zone's mild Mediterranean climate, with hot, dry summers and cool, rainy winters. The area's natural vegetation is sparse Mediterranean forest, scrubland, and shrubs. The coastal lowlands are part of the Tyrrhenian-Adriatic sclerophyllous and mixed forests ecoregion, in which forests and woodlands of evergreen sclerophyll oaks predominate, chiefly holm oak (Quercus ilex) and cork oak (Quercus suber). Much of the coastal lowlands have been cleared for agriculture, grazing and logging; these activities have reduced the forest area considerably.

Between 600 and 1,800 m (2,000 and 5,900 ft) is a temperate montane zone. The mountains are cooler and wetter, and home to the Corsican montane broadleaf and mixed forests ecoregion. This region supports diverse forests of oak, pine, and broadleaf deciduous trees, with vegetation more typical of northern Europe. The population lives predominantly below 900 m (3,000 ft), with only shepherds and hikers from 600 to 900 m (2,000 to 3,000 ft).

The elevation above 1,800 to 2,700 m (5,900 to 8,900 ft) is the high alpine zone. Vegetation is sparse, with high winds and frequent cloud cover. This zone is uninhabited.

There is considerable birdlife in Corsica. One famous example is the bearded vulture, or Lammergeier, which (along with the iconic griffon vulture) serve as environmental "janitors" by scavenging the remains of deceased animals, thus limiting the proliferation of infectious microbes and diseases. Other avian species to be seen include the barn owl, blue rock thrush, common crane, Corsican nuthatch, golden eagle, greater flamingo, osprey, peregrine falcon, red kite, and starry bittern. In some cases, Corsica is an isolated portion of a species' distribution; in other cases, it is the furthest point in a species' range. For example, a subspecies of hooded crow (Corvus cornix cornix) occurs in Corsica, but not anywhere further south.

Corsica has abundant reptile and amphibians, one protected species being the sensitive Hermann's tortoise, which are found at A Cupulatta at Vero and Moltifao Regional Natural Park. Corsican brook and fire salamanders, leaf-toed gecko, and yellow and green grass snakes are also common. The European pond turtle can be seen, especially in the waters of Fango Estuary, southern Calvi, Biguglia Lagoon and Pietracorbara.