- Gabar Goshawk
- Gadwall
- Galapagos Dove
- Galapagos Flycatcher
- Galapagos Hawk
- Galapagos Mockingbird
- Galapagos Penguin
- Galapagos Shearwater
- Garganey
- Germain's Swiftlet
- Giant Coot
- Giant Cowbird
- Giant Hummingbird
- Giant Kingfisher
- Giant Nuthatch
- Glossy-black Thrush
- Glossy Flowerpiercer
- Glossy Ibis
- Goldcrest
- Golden-backed Weaver
- Golden-bellied Gerygone
- Golden-billed Saltator
- Golden-breasted Bunting
- Golden-breasted Puffleg
- Golden-breasted Starling
- Golden-naped Tanager
- Golden-tailed Woodpecker
- Golden-throated Barbet
- Golden Eagle
- Golden Tanager
- Goliath Heron
- Gorgeted Sunangel
- Grasshopper Buzzard
- Great-billed Heron
- Great Black-backed Gull
- Great Black Hawk
- Great Blue Heron
- Great Cormorant
- Great Crested Grebe
- Great Egret
- Great Frigatebird
- Great Grebe
- Great Hornbill
- Great Horned Owl
- Great Kiskadee
- Great Myna
- Great Potoo
- Great Reed Warbler
- Great Sapphirewing
- Great Sparrow
- Great Spotted Cuckoo
- Great Spotted Woodpecker
- Great Tit
- Great Tit (bokharensis)
- Great White Pelican
- Greater Ani
- Greater Blue-eared Starling
- Greater Coucal
- Greater Crested Tern
- Greater Flamingo
- Greater Green Leafbird
- Greater Honeyguide
- Greater Kestrel
- Greater Necklaced Laughingthrush
- Greater Painted-snipe
- Greater Racket-tailed Drongo
- Greater Sand Plover
- Greater Striped Swallow
- Greater Yellow-headed Vulture
- Greater Yellowlegs
- Greater Yellownape
- Green-and-rufous Kingfisher
- Green-backed Eremomela
- Green-billed Malkoha
- Green-crowned Brilliant
- Green-eared Barbet
- Green-legged Partridge
- Green-tailed Sunbird
- Green-tailed Trainbearer
- Green-winged Pytilia
- Green Bee-eater
- Green Honeycreeper
- Green Ibis
- Green Imperial Pigeon
- Green Kingfisher
- Green Peafowl
- Green Sandpiper
- Green Thorntail
- Green Wood Hoopoe
- Greenish Warbler
- Grey-backed Camaroptera
- Grey-backed Cisticola
- Grey-backed Fiscal
- Grey-backed Shrike
- Grey-backed Sparrow-Lark
- Grey-breasted Spurfowl
- Grey-capped Pygmy Woodpecker
- Grey-capped Social Weaver
- Grey-capped Warbler
- Grey-cheeked Fulvetta
- Grey-headed Bushshrike
- Grey-headed Canary-flycatcher
- Grey-headed Gull
- Grey-headed Kingfisher
- Grey-headed Silverbill
- Grey-headed Swamphen
- Grey-headed Woodpecker
- Grey-necked Bunting
- Grey-necked Wood Rail
- Grey-winged Francolin
- Grey Bush Chat
- Grey Crowned Crane
- Grey Go-away-bird
- Grey Gull
- Grey Heron
- Grey Kestrel
- Grey Kingbird
- Grey Parrot
- Grey Pileated Finch
- Grey Plover
- Grey Treepie
- Grey Wagtail
- Greyish Eagle-Owl
- Greylag Goose
- Groundscraper Thrush
- Guanay Cormorant
- Gull-billed Tern