- Garganey
- Gartered Trogon
- Giant Kingfisher
- Glittering-bellied Emerald
- Glossy Ibis
- Golden-collared Manakin
- Golden-fronted Leafbird
- Golden-green Woodpecker
- Golden-headed Manakin
- Golden-hooded Tanager
- Golden-tailed Woodpecker
- Golden-throated Barbet
- Golden Eagle
- Golden Palm Weaver
- Great-tailed Grackle
- Great Black Hawk
- Great Blue Heron
- Great Bustard
- Great Crested Grebe
- Great Egret
- Great Grey Owl
- Great Jacamar
- Great Kiskadee
- Great Potoo
- Great Rufous Woodcreeper
- Great Snipe
- Great Spotted Cuckoo
- Great Spotted Woodpecker
- Great Tit
- Great White Pelican
- Greater Ani
- Greater Blue-eared Starling
- Greater Coucal
- Greater Flameback
- Greater Honeyguide
- Greater Racket-tailed Drongo
- Greater Rhea
- Greater Spotted Eagle
- Greater Vasa Parrot
- Green-and-rufous Kingfisher
- Green-backed Camaroptera
- Green-barred Woodpecker
- Green-billed Malkoha
- Green-headed Sunbird
- Green-winged Pytilia
- Green Bee-eater
- Green Hermit
- Green Heron
- Green Honeycreeper
- Green Ibis
- Green Imperial Pigeon
- Green Kingfisher
- Green Sandpiper
- Green Wood Hoopoe
- Grey-backed Camaroptera
- Grey-backed Shrike
- Grey-capped Cuckoo
- Grey-cheeked Nunlet
- Grey-cowled Wood Rail
- Grey-headed Canary-flycatcher
- Grey-headed Chickadee
- Grey-headed Kingfisher
- Grey-headed Lovebird
- Grey-headed Swamphen
- Grey-headed Tanager
- Grey-headed Woodpecker
- Grey-hooded Warbler
- Grey-winged Blackbird
- Grey Bush Chat
- Grey Crowned Crane
- Grey Go-away-bird
- Grey Heron
- Grey Kestrel
- Grey Wagtail
- Greyish Baywing
- Greyish Saltator
- Greylag Goose
- Griffon Vulture
- Groove-billed Ani
- Guatemalan Tyrannulet
- Guianan Trogon
- Guira Cuckoo