Kefalonia island hosts a wide range of fauna species, vertebrates (birds, reptiles, amphibians, mammals) and invertebrates (insects, spiders, earthworms etc) which has for many years, attracted the interest of researchers from various nations.
Birds are probably the most easy to notice. In Kefalonia due to the variety of habitats there is a great variety of bird species. Estimates (conducted until the present day) report 245 species of birds inKefalonia, that correspond to more than half of the bird species recorded in Greece. In total, 72 of those 245 species – that is, about one third – need protection, according to the Directive 2009/147/EC on the conservation of wild birds.