- Gadwall
- Galah
- Galapagos Dove
- Galapagos Flycatcher
- Galapagos Mockingbird
- Galapagos Penguin
- Galapagos Shearwater
- Genovesa Ground Finch
- Gentoo Penguin
- Giant Kingfisher
- Glaucous-winged Gull
- Glaucous Gull
- Glossy Black Cockatoo
- Golden-browed Chlorophonia
- Golden-winged Sunbird
- Goliath Heron
- Great Black-backed Gull
- Great Blue Heron
- Great Cormorant
- Great Egret
- Great Frigatebird
- Great Kiskadee
- Great Spotted Cuckoo
- Great Spotted Woodpecker
- Great Tinamou
- Great Tit
- Great White Pelican
- Greater Ani
- Greater Blue-eared Starling
- Greater Crested Tern
- Greater Double-collared Sunbird
- Greater Flamingo
- Greater Kestrel
- Green-crowned Brilliant
- Green-tailed Goldenthroat
- Green Rosella
- Green Sandpiper
- Grey-backed Camaroptera
- Grey-backed Fiscal
- Grey-backed Sparrow-Lark
- Grey-capped Social Weaver
- Grey-capped Warbler
- Grey-headed Gull
- Grey-headed Kingfisher
- Grey Crowned Crane
- Grey Go-away-bird
- Grey Heron
- Grey Kestrel
- Grey Petrel
- Grey Plover
- Grey Shrikethrush
- Greylag Goose
- Groove-billed Ani
- Gull-billed Tern