
These are species with at least one recorded territory in Greece, not a national checklist: a bird list from eBird or Avibase is more complete. The counts follow recording effort as much as wildlife, so a country with more visitors and more naturalists will show more of both.
The species with the most open occurrence records in Greece, among those a photograph exists for. Most recorded is not most numerous: it rewards animals that are common, conspicuous and live where people go.

Larus michahellis

Phoenicopterus roseus
Pink drifts across Walvis Bay's lagoons after the rains.

Corvus cornix

Microcarbo pygmaeus

Galerida cristata

Pelecanus crispus

Pica pica

Curruca melanocephala

Streptopelia decaocto

Iduna pallida

Emberiza calandra

Oenanthe melanoleuca
The reference database has no regions filed under Greece.
The field guide covers Greece on the map, but none of its species have an entry written for them yet.