- Gabar Goshawk
- Gadwall
- Garden Warbler
- Garganey
- Giant Cowbird
- Glittering-throated Emerald
- Glossy Ibis
- Goldcrest
- Golden-crowned Warbler
- Golden-headed Manakin
- Golden-hooded Tanager
- Golden-spangled Piculet
- Golden-winged Parakeet
- Goliath Heron
- Great-billed Hermit
- Great-tailed Grackle
- Great Black-backed Gull
- Great Black Hawk
- Great Blue Heron
- Great Cormorant
- Great Crested Flycatcher
- Great Crested Grebe
- Great Egret
- Great Grebe
- Great Grey Shrike
- Great Kiskadee
- Great Lizard Cuckoo
- Great Potoo
- Great Spotted Cuckoo
- Great Spotted Woodpecker
- Great Stone-curlew
- Great Thrush
- Great Tit
- Greater Ani
- Greater Coucal
- Greater Crested Tern
- Greater Flamingo
- Greater Painted-snipe
- Greater Sand Plover
- Greater Yellow-headed Vulture
- Greater Yellowlegs
- Green-and-rufous Kingfisher
- Green-backed Firecrown
- Green-backed Trogon
- Green-rumped Parrotlet
- Green-tailed Goldenthroat
- Green-tailed Jacamar
- Green-tailed Warbler
- Green-throated Carib
- Green-throated Mango
- Green Bee-eater
- Green Hermit
- Green Heron
- Green Honeycreeper
- Green Ibis
- Green Kingfisher
- Green Shrike-Vireo
- Green Wood Hoopoe
- Grey-backed Camaroptera
- Grey-backed Fiscal
- Grey-breasted Crake
- Grey-breasted Martin
- Grey-breasted Prinia
- Grey-breasted Sabrewing
- Grey-breasted Spurfowl
- Grey-browed Brushfinch
- Grey-capped Social Weaver
- Grey-flanked Cinclodes
- Grey-fronted Dove
- Grey-headed Chachalaca
- Grey-headed Fish Eagle
- Grey-headed Kingfisher
- Grey-headed Swamphen
- Grey-hooded Sierra Finch
- Grey-lined Hawk
- Grey-necked Wood Rail
- Grey-winged Trumpeter
- Grey Crowned Crane
- Grey Francolin
- Grey Gull
- Grey Heron
- Grey Kingbird
- Grey Nightjar
- Grey Parrot
- Grey Plover
- Grey Wagtail
- Greyish Saltator
- Greylag Goose
- Guadeloupe Woodpecker
- Guanay Cormorant
- Guianan Cock-of-the-rock
- Guianan Red Cotinga
- Guianan Schiffornis
- Guianan Streaked Antwren
- Guianan Toucanet
- Guianan Trogon
- Guianan Warbling Antbird
- Guira Cuckoo
- Gull-billed Tern