- Gabar Goshawk
- Gabon Woodpecker
- Gadwall
- Garden Sunbird
- Garden Warbler
- Garganey
- Gartered Trogon
- Giant Coua
- Giant Cowbird
- Giant Kingfisher
- Glaucous-winged Gull
- Glaucous Gull
- Glittering-throated Emerald
- Glossy Flowerpiercer
- Glossy Ibis
- Goldcrest
- Golden-bellied Flycatcher
- Golden-bellied Gerygone
- Golden-crowned Sparrow
- Golden-crowned Warbler
- Golden-faced Tyrannulet
- Golden-fronted Leafbird
- Golden-fronted Whitestart
- Golden-hooded Tanager
- Golden-plumed Parakeet
- Golden Eagle
- Golden Tanager
- Goliath Heron
- Gorgeted Woodstar
- Grass-green Tanager
- Grass Wren
- Grasshopper Buzzard
- Great-tailed Grackle
- Great Black-backed Gull
- Great Blue Heron
- Great Blue Turaco
- Great Bustard
- Great Cormorant
- Great Crested Grebe
- Great Egret
- Great Grey Owl
- Great Grey Shrike
- Great Hornbill
- Great Jacamar
- Great Kiskadee
- Great Knot
- Great Myna
- Great Potoo
- Great Reed Warbler
- Great Spotted Cuckoo
- Great Spotted Woodpecker
- Great Stone-curlew
- Great Thrush
- Great Tit
- Great Tit (bokharensis)
- Great White Pelican
- Greater Ani
- Greater Antillean Grackle
- Greater Blue-eared Starling
- Greater Coucal
- Greater Crested Tern
- Greater Flamingo
- Greater Green Leafbird
- Greater Honeyguide
- Greater Hoopoe-Lark
- Greater Kestrel
- Greater Necklaced Laughingthrush
- Greater Painted-snipe
- Greater Racket-tailed Drongo
- Greater Sand Plover
- Greater Scaup
- Greater Short-toed Lark
- Greater Spotted Eagle
- Greater Vasa Parrot
- Greater White-fronted Goose
- Greater Yellow-headed Vulture
- Greater Yellowlegs
- Greater Yellownape
- Green-and-black Fruiteater
- Green-backed Trogon
- Green-billed Malkoha
- Green-breasted Mango
- Green-crowned Brilliant
- Green-eared Barbet
- Green-legged Partridge
- Green-throated Carib
- Green-throated Mango
- Green-winged Pytilia
- Green Aracari
- Green Crombec
- Green Hermit
- Green Heron
- Green Honeycreeper
- Green Ibis
- Green Jery
- Green Kingfisher
- Green Sandpiper
- Green Thorntail
- Green Twinspot
- Green Wood Hoopoe
- Greenish Warbler
- Grey-backed Camaroptera
- Grey-backed Fiscal
- Grey-backed Shrike
- Grey-breasted Martin
- Grey-breasted Spurfowl
- Grey-browed Brushfinch
- Grey-capped Social Weaver
- Grey-capped Warbler
- Grey-crowned Goldfinch
- Grey-headed Bushshrike
- Grey-headed Canary-flycatcher
- Grey-headed Chachalaca
- Grey-headed Chickadee
- Grey-headed Gull
- Grey-headed Kingfisher
- Grey-headed Lapwing
- Grey-headed Lovebird
- Grey-headed Swamphen
- Grey-headed Tanager
- Grey-headed Woodpecker
- Grey-necked Bunting
- Grey-tailed Mountaingem
- Grey Bush Chat
- Grey Catbird
- Grey Crowned Crane
- Grey Emutail
- Grey Francolin
- Grey Go-away-bird
- Grey Hawk
- Grey Heron
- Grey Hypocolius
- Grey Kestrel
- Grey Kingbird
- Grey Partridge
- Grey Peacock-Pheasant
- Grey Plover
- Grey Tit-Flycatcher
- Grey Wagtail
- Greyish Eagle-Owl
- Greyish Piculet
- Greylag Goose
- Griffon Vulture
- Groundscraper Thrush
- Guadeloupe Woodpecker
- Guianan Trogon
- Guianan Tyrannulet
- Guinea Turaco
- Güldenstädt's Redstart
- Gull-billed Tern