- Gabar Goshawk
- Gadwall
- Gambaga Flycatcher
- Garden Emerald
- Garden Warbler
- Garganey
- Gartered Trogon
- Giant Cowbird
- Giant Hummingbird
- Giant Kingfisher
- Glaucous Gull
- Glossy Ibis
- Goldcrest
- Golden-backed Weaver
- Golden-breasted Bunting
- Golden-breasted Starling
- Golden-browed Chlorophonia
- Golden-fronted Leafbird
- Golden-hooded Tanager
- Golden-naped Woodpecker
- Golden-olive Woodpecker
- Golden-winged Sunbird
- Golden-winged Warbler
- Golden Palm Weaver
- Golden Pipit
- Goliath Heron
- Gorgeous Bushshrike
- Graceful Prinia
- Grasshopper Buzzard
- Grassland Yellow Finch
- Great-tailed Grackle
- Great Black-backed Gull
- Great Blue Heron
- Great Blue Turaco
- Great Bustard
- Great Cormorant
- Great Crested Flycatcher
- Great Crested Grebe
- Great Curassow
- Great Egret
- Great Grebe
- Great Green Macaw
- Great Grey Shrike
- Great Kiskadee
- Great Lizard Cuckoo
- Great Potoo
- Great Reed Warbler
- Great Spotted Cuckoo
- Great Spotted Woodpecker
- Great Stone-curlew
- Great Tinamou
- Great Tit
- Great White Pelican
- Greater Antillean Grackle
- Greater Blue-eared Starling
- Greater Coucal
- Greater Crested Tern
- Greater Double-collared Sunbird
- Greater Flamingo
- Greater Honeyguide
- Greater Kestrel
- Greater Painted-snipe
- Greater Sand Plover
- Greater Scaup
- Greater Short-toed Lark
- Greater Spotted Eagle
- Greater Swamp Warbler
- Greater White-fronted Goose
- Greater Yellowlegs
- Green-backed Honeybird
- Green-backed Woodpecker
- Green-billed Coucal
- Green-breasted Mango
- Green-crowned Brilliant
- Green-headed Oriole
- Green-headed Sunbird
- Green-throated Sunbird
- Green-winged Pytilia
- Green Barbet
- Green Bee-eater
- Green Crombec
- Green Hermit
- Green Heron
- Green Honeycreeper
- Green Hylia
- Green Ibis
- Green Imperial Pigeon
- Green Kingfisher
- Green Sandpiper
- Green Thorntail
- Green Wood Hoopoe
- Grey-backed Camaroptera
- Grey-backed Fiscal
- Grey-bellied Cuckoo
- Grey-breasted Martin
- Grey-breasted Wood Wren
- Grey-capped Flycatcher
- Grey-capped Social Weaver
- Grey-capped Warbler
- Grey-chested Dove
- Grey-chinned Sunbird
- Grey-cowled Wood Rail
- Grey-crested Helmetshrike
- Grey-crowned Yellowthroat
- Grey-headed Bushshrike
- Grey-headed Canary-flycatcher
- Grey-headed Chachalaca
- Grey-headed Dove
- Grey-headed Fish Eagle
- Grey-headed Gull
- Grey-headed Kingfisher
- Grey-headed Kite
- Grey-headed Nigrita
- Grey-headed Oliveback
- Grey-headed Silverbill
- Grey-headed Swamphen
- Grey-headed Tanager
- Grey-headed Woodpecker
- Grey-hooded Sierra Finch
- Grey-olive Greenbul
- Grey-rumped Swallow
- Grey-throated Barbet
- Grey-winged Robin-Chat
- Grey Apalis
- Grey Crowned Crane
- Grey Cuckooshrike
- Grey Go-away-bird
- Grey Gull
- Grey Hawk
- Grey Heron
- Grey Kestrel
- Grey Kingbird
- Grey Partridge
- Grey Penduline Tit
- Grey Plover
- Grey Sunbird
- Grey Tit-Flycatcher
- Grey Wagtail
- Grey Wren-Warbler
- Greyish Saltator
- Greylag Goose
- Griffon Vulture
- Groove-billed Ani
- Groundscraper Thrush
- Guatemalan Tyrannulet
- Gull-billed Tern