- Gadwall
- Gambel's Quail
- Gila Woodpecker
- Gilded Flicker
- Glaucous-winged Gull
- Glossy Ibis
- Golden-cheeked Warbler
- Golden-crowned Kinglet
- Golden-crowned Sparrow
- Golden-fronted Woodpecker
- Golden-winged Warbler
- Grasshopper Sparrow
- Grassland Yellow Finch
- Great-tailed Grackle
- Great Blue Heron
- Great Crested Flycatcher
- Great Egret
- Great Grebe
- Great Horned Owl
- Great Kiskadee
- Greater Pewee
- Greater Roadrunner
- Greater Scaup
- Greater White-fronted Goose
- Greater Yellowlegs
- Green-backed Trogon
- Green-tailed Towhee
- Green-winged Teal
- Green Heron
- Green Honeycreeper
- Green Kingfisher
- Grey-cheeked Thrush
- Grey-crowned Rosy Finch
- Grey-headed Chachalaca
- Grey-headed Swamphen
- Grey Catbird
- Grey Plover
- Guianan Trogon