- Gabar Goshawk
- Gadwall
- Garden Warbler
- Garganey
- Giant Coot
- Giant Cowbird
- Giant Hummingbird
- Giant Kingfisher
- Gillett's Lark
- Glaucous Gull
- Glossy Flowerpiercer
- Glossy Ibis
- Goldcrest
- Golden-backed Weaver
- Golden-bellied Gerygone
- Golden-bellied Starfrontlet
- Golden-billed Saltator
- Golden-breasted Bunting
- Golden-breasted Puffleg
- Golden-breasted Starling
- Golden-crowned Kinglet
- Golden-faced Tyrannulet
- Golden-fronted Whitestart
- Golden-headed Quetzal
- Golden-hooded Tanager
- Golden-naped Tanager
- Golden-olive Woodpecker
- Golden-spotted Ground Dove
- Golden-tailed Woodpecker
- Golden-winged Sparrow
- Golden Babbler
- Golden Eagle
- Golden Tanager
- Goliath Heron
- Gould's Inca
- Grasshopper Buzzard
- Great-tailed Grackle
- Great Antshrike
- Great Black-backed Gull
- Great Blue Heron
- Great Blue Turaco
- Great Bustard
- Great Cormorant
- Great Crested Grebe
- Great Curassow
- Great Egret
- Great Grey Shrike
- Great Hornbill
- Great Iora
- Great Kiskadee
- Great Myna
- Great Reed Warbler
- Great Sapphirewing
- Great Shearwater
- Great Skua
- Great Spotted Cuckoo
- Great Spotted Woodpecker
- Great Thrush
- Great Tit
- Great White Pelican
- Greater Blue-eared Starling
- Greater Coucal
- Greater Crested Tern
- Greater Double-collared Sunbird
- Greater Flamingo
- 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 Striped Swallow
- Greater Swamp Warbler
- Greater White-fronted Goose
- Greater Yellowlegs
- Green-and-black Fruiteater
- Green-and-white Hummingbird
- Green-headed Sunbird
- Green-legged Partridge
- Green-tailed Trainbearer
- Green-winged Pytilia
- Green Crombec
- Green Heron
- Green Honeycreeper
- Green Hylia
- Green Kingfisher
- Green Peafowl
- Green Sandpiper
- Green Twinspot
- Green White-eye
- Green Wood Hoopoe
- Greenish Warbler
- Grey-backed Camaroptera
- Grey-backed Cisticola
- Grey-backed Fiscal
- Grey-backed Sparrow-Lark
- Grey-breasted Mountain Toucan
- Grey-breasted Seedsnipe
- Grey-breasted Wood Wren
- Grey-browed Brushfinch
- Grey-capped Social Weaver
- Grey-capped Warbler
- Grey-cheeked Bulbul
- Grey-chested Dove
- Grey-cowled Wood Rail
- Grey-headed Batis
- Grey-headed Canary-flycatcher
- Grey-headed Chachalaca
- Grey-headed Chickadee
- Grey-headed Dove
- Grey-headed Fish Eagle
- Grey-headed Gull
- Grey-headed Kingfisher
- Grey-headed Lapwing
- Grey-headed Nigrita
- Grey-headed Swamphen
- Grey-headed Woodpecker
- Grey-tailed Mountaingem
- Grey-tailed Tattler
- Grey Catbird
- Grey Crowned Crane
- Grey Cuckooshrike
- Grey Go-away-bird
- Grey Hawk
- Grey Heron
- Grey Kestrel
- Grey Partridge
- Grey Plover
- Grey Seedeater
- Grey Tit
- Grey Wagtail
- Greyish Eagle-Owl
- Greylag Goose
- Griffon Vulture
- Groove-billed Ani
- Gull-billed Tern