- Gadwall
- Galah
- Garganey
- Gartered Trogon
- Giant Antpitta
- Giant Hummingbird
- Giant Kingfisher
- Glistening-green Tanager
- Glossy-black Thrush
- Glossy Flowerpiercer
- Glossy Ibis
- Goldcrest
- Golden-breasted Puffleg
- Golden-collared Honeycreeper
- Golden-crowned Flycatcher
- Golden-fronted Woodpecker
- Golden-headed Quetzal
- Golden-naped Tanager
- Golden Tanager
- Goliath Heron
- Gorgeted Sunangel
- Grass Wren
- Great-tailed Grackle
- Great Black-backed Gull
- Great Black Hawk
- Great Blue Heron
- Great Cormorant
- Great Crested Grebe
- Great Egret
- Great Grey Owl
- Great Grey Shrike
- Great Kiskadee
- Great Reed Warbler
- Great Sapphirewing
- Great Shearwater
- Great Skua
- Great Spotted Woodpecker
- Great Thrush
- Great Tit
- Great White Pelican
- Greater Blue-eared Starling
- Greater Crested Tern
- Greater Flamingo
- Greater Painted-snipe
- Greater Sand Plover
- Greater White-fronted Goose
- Green-and-black Fruiteater
- Green-capped Eremomela
- Green-crowned Brilliant
- Green Heron
- Green Honeycreeper
- Green Rosella
- Green Sandpiper
- Green Thorntail
- Green Wood Hoopoe
- Greenish Elaenia
- Grey-backed Camaroptera
- Grey-breasted Martin
- Grey-breasted Wood Wren
- Grey-capped Social Weaver
- Grey-capped Warbler
- Grey-crowned Babbler
- Grey-crowned Yellowthroat
- Grey-headed Gull
- Grey-headed Kingfisher
- Grey-headed Silverbill
- Grey-throated Chat
- Grey Butcherbird
- Grey Catbird
- Grey Crowned Crane
- Grey Currawong
- Grey Fantail
- Grey Heron
- Grey Kestrel
- Grey Plover
- Grey Shrikethrush
- Grey Teal
- Grey Wagtail
- Greyish Eagle-Owl
- Greylag Goose
- Griffon Vulture
- Groove-billed Ani
- Guayaquil Woodpecker
- Gyrfalcon