
These are species with at least one recorded territory in New Caledonia, 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 New Caledonia, among those a photograph exists for. Most recorded is not most numerous: it rewards animals that are common, conspicuous and live where people go.

Lichmera incana

Zosterops xanthochroa

Gerygone flavolateralis

Philemon diemenensis

Collocalia uropygialis

Megaptera novaeangliae

Aplonis striata

Dugong dugon

Ducula goliath

Coracina caledonica

Rhipidura verreauxi

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