You could mix and match your genres as well and go with some conspiracy theory/lost world stuff.
Add some Dinosaurs or refluff into giant Tuatara. Perhaps some Vikings have reached here and some race of ancients or whatever used magic to awaken animals into humanoids. There are also extinct things like Moa and the Haast Eagle you could upscale (refluff Roc that hunts marine Dinosaurs). Vikings or some other lost wanderer would give more human races if wanted or maybe the awakened Birdmen won the war and enslaved or ate any humans.
Kea.
Smart tricksters. The Gnomes of the avian Zealandia. Probably +2 int +1 whatever. Live in alpine eras perhaps with constructs to do mining. Only metal working race perhaps.
Avians
Kakapo
Charismatic clowns. +2 charisma+ whatever.
Moa
The soldier bird men. +2 str+1 whatever
Haast Eagle Men.
Aaracokra perhaps.
Kiwi
Has Drow low light vision + advantage on perception involving smells. Perhaps the ruling caste in certain parts.
Tuatara
Tweak the 5E lizardmen.
One of the smarter species perhaps can have metal or obsidian so can do Aztec style obsidian swords and metal tipped spears+ one handed metal weapons perhaps of limited size.
Taniwha can be aquatic Dragons or refluffed aquatic Dinosaurs or whatever. The old 2E Barbarians Handbook has some suitable kits that could be done as prestige classes and there was an old Dragon article that had polynesian weapons.
haha . I’m working on a fighter sub class for the races that will be based off the Maori warriors . Excel in guerilla warfare and hand to hand combat .
