- Giant Cowbird
- Glittering-throated Emerald
- Golden-collared Woodpecker
- Golden-green Woodpecker
- Golden-headed Manakin
- Golden-rumped Euphonia
- Golden-sided Euphonia
- Golden-spangled Piculet
- Golden-winged Parakeet
- Great-billed Hermit
- Great Black-backed Gull
- Great Black Hawk
- Great Cormorant
- Great Egret
- Great Horned Owl
- Great Kiskadee
- Great Tit
- Greater Ani
- Greater Yellow-headed Vulture
- Greater Yellowlegs
- Green-and-rufous Kingfisher
- Green-backed Trogon
- Green-rumped Parrotlet
- Green-tailed Goldenthroat
- Green-tailed Jacamar
- Green Aracari
- Green Honeycreeper
- Green Ibis
- Green Kingfisher
- Green Oropendola
- Grey-bellied Hawk
- Grey-breasted Martin
- Grey-breasted Sabrewing
- Grey-crowned Flatbill
- Grey-headed Kite
- Grey-lined Hawk
- Grey-winged Trumpeter
- Grey Antbird
- Grey Heron
- Grey Kingbird
- Greyish Mourner
- Greyish Saltator
- Greylag Goose
- Guianan Cock-of-the-rock
- Guianan Puffbird
- Guianan Red Cotinga
- Guianan Streaked Antwren
- Guianan Toucanet
- Guianan Trogon
- Guianan Tyrannulet
- Guianan Warbling Antbird
- Guianan Woodcreeper
- Guira Tanager