- Galah
- Galapagos Flycatcher
- Galapagos Hawk
- Galapagos Penguin
- Galapagos Shearwater
- Gartered Trogon
- Gilded Barbet
- Glistening-green Tanager
- Glossy-black Thrush
- Glossy Flowerpiercer
- Glossy Ibis
- Goldcrest
- Golden-breasted Puffleg
- Golden-collared Manakin
- Golden-crowned Flycatcher
- Golden-crowned Warbler
- Golden-faced Tyrannulet
- Golden-fronted Whitestart
- Golden-headed Manakin
- Golden-headed Quetzal
- Golden-naped Tanager
- Golden-naped Woodpecker
- Golden-tailed Woodpecker
- Golden-winged Warbler
- Golden Grosbeak
- Golden Tanager
- Goliath Heron
- Great Black-backed Gull
- Great Blue Heron
- Great Cormorant
- Great Crested Grebe
- Great Egret
- Great Frigatebird
- Great Kiskadee
- Great Sapphirewing
- Great Spotted Woodpecker
- Great Thrush
- Great Tit
- Greater Crested Tern
- Greater Flamingo
- Greater Striped Swallow
- Green-and-black Fruiteater
- Green-and-gold Tanager
- Green-backed Trogon
- Green-breasted Mango
- Green-crowned Brilliant
- Green-throated Carib
- Green Hermit
- Green Heron
- Green Honeycreeper
- Green Kingfisher
- Green Sandpiper
- Green Thorntail
- Grey-breasted Wood Wren
- Grey-browed Brushfinch
- Grey-headed Dove
- Grey-headed Kite
- Grey-headed Tanager
- Grey-tailed Tattler
- Grey Crowned Crane
- Grey Currawong
- Grey Go-away-bird
- Grey Hawk
- Grey Heron
- Grey Kingbird
- Grey Plover
- Grey Sunbird
- Grey Tit
- Grey Wagtail
- Greylag Goose
- Griffon Vulture
- Groove-billed Ani
- Gurney's Sugarbird