- Gadwall
- Galapagos Hawk
- Galapagos Martin
- Garden Warbler
- Garganey
- Giant Antpitta
- Glossy Ibis
- Goldcrest
- Golden-breasted Puffleg
- Golden-naped Tanager
- Golden Tanager
- Gorgeted Sunangel
- Great-tailed Grackle
- Great Black-backed Gull
- Great Black Hawk
- Great Blue Heron
- Great Cormorant
- Great Crested Grebe
- Great Curassow
- Great Egret
- Great Frigatebird
- Great Green Macaw
- Great Kiskadee
- Great Potoo
- Great Sapphirewing
- Great Spotted Woodpecker
- Great Tit
- Greater Ani
- Greater Flamingo
- Greater Yellow-headed Vulture
- Green-and-gold Tanager
- Green-crowned Brilliant
- Green Hermit
- Green Honeycreeper
- Green Thorntail
- Grey-breasted Martin
- Grey-breasted Sabrewing
- Grey-chinned Hermit
- Grey-cowled Wood Rail
- Grey-headed Kite
- Grey Gerygone
- Grey Heron
- Grey Wagtail
- Greylag Goose
- Griffon Vulture