- Galah
- Garganey
- Gartered Trogon
- Glaucous-winged Gull
- Glaucous Gull
- Glossy Ibis
- Grasshopper Buzzard
- Great-billed Heron
- Great Egret
- Great Skua
- Great Spotted Cuckoo
- Greater Crested Tern
- Greater Flamingo
- Greater Scaup
- Green-backed Firecrown
- Grey-headed Honeyeater
- Grey-tailed Tattler
- Grey Butcherbird
- Grey Fantail
- Grey Heron
- Grey Shrikethrush
- Gull-billed Tern