- Gray-backed Sparrow-Lark
- Gray-backed Starling
- Gray-backed Storm-Petrel
- Gray-backed Storm Petrel
- Gray-backed Tachuri
- Gray-backed Tailorbird
- Gray-backed Tern
- Gray-backed Thrush
- Gray-backed Wagtail
- Gray-banded Babbler
- Gray-banded Munia
- Gray-barred Wren
- Gray-bellied Antbird
- Gray-bellied Bulbul
- Gray-bellied Comet
- Gray-bellied Cuckoo
- Gray-bellied Flowerpiercer
- Gray-bellied Goshawk
- Gray-bellied Hawk
- Gray-bellied Honeyeater
- Gray-bellied Longbill
- Gray-bellied Shrike-Tyrant
- Gray-bellied Shrike Tyrant
- Gray-bellied Spinetail
- Gray-bellied Tesia
- Gray-bellied Wren-Babbler
- Gray-bellied Wren Babbler
- Gray-breasted Babbler
- Gray-breasted Comet
- Gray-breasted Crake
- Gray-breasted Flycatcher
- Gray-breasted Francolin
- Gray-breasted Jay
- Gray-breasted Laughingthrush
- Gray-breasted Martin
- Gray-breasted Mountain-Toucan
- Gray-breasted Mountain Toucan
- Gray-breasted Parakeet
- Gray-breasted Parrotbill
- Gray-breasted Partridge
- Gray-breasted Prinia
- Gray-breasted Robin
- Gray-breasted Rufous Fantail
- Gray-breasted Sabrewing
- Gray-breasted Seedsnipe
- Gray-breasted Spiderhunter
- Gray-breasted Spurfowl
- Gray-breasted Wood-Wren
- Gray-breasted Wood Wren
- Gray-breasted Woodpecker
- Gray-browed Babbler
- Gray-browed Brush-Finch
- Gray-browed Brush Finch
- Gray-browed Brushfinch
- Gray-brown White-eye
- Gray-capped Cuckoo
- Gray-capped Flycatcher
- Gray-capped Hemispingus
- Gray-capped Parrotbill
- Gray-capped Pygmy Woodpecker
- Gray-capped Shrike
- Gray-capped Tanager
- Gray-capped Tyrannulet
- Gray-capped Warbler
- Gray-capped Woodpecker
- Gray-cheeked Bulbul
- Gray-cheeked Fulvetta
- Gray-cheeked Grass-Finch
- Gray-cheeked Grass Finch
- Gray-cheeked Green-Pigeon
- Gray-cheeked Hornbill
- Gray-cheeked Liocichla
- Gray-cheeked Nunlet
- Gray-cheeked Parakeet
- Gray-cheeked Thrush
- Gray-cheeked Tit-Babbler
- Gray-cheeked Tit Babbler
- Gray-cheeked Warbler
- Gray-chested Babbler
- Gray-chested Dove
- Gray-chested Greenlet
- Gray-chested Illadopsis
- Gray-chested Jungle-Flycatcher
- Gray-chested Jungle Flycatcher
- Gray-chested Kakamega
- Gray-chested Thrush-Babbler
- Gray-chested Thrush Babbler
- Gray-chinned Hermit
- Gray-chinned Minivet
- Gray-chinned Sunbird
- Gray-collared Becard
- Gray-collared Oriole
- Gray-cowled Wood-Rail
- Gray-cowled Wood Rail
- Gray-crested Cacholote
- Gray-crested Finch
- Gray-crested Helmetshrike
- Gray-crested Tanager
- Gray-crested Tit
- Gray-crowned Babbler
- Gray-crowned Chatterer
- Gray-crowned Crocias
- Gray-crowned Crowtit
- Gray-crowned Flycatcher
- Gray-crowned Greenbul
- Gray-crowned Mannikin
- Gray-crowned Munia
- Gray-crowned Palm-Tanager
- Gray-crowned Palm Tanager
- Gray-crowned Parrotbill
- Gray-crowned Prinia
- Gray-crowned Rosy-Finch
- Gray-crowned Rosy Finch
- Gray-crowned Tanager
- Gray-crowned Tetraka
- Gray-crowned Warbler
- Gray-crowned Whistler
- Gray-crowned Woodpecker
- Gray-crowned Yellowthroat
- Gray-eared Brush-Finch
- Gray-eared Brush Finch
- Gray-eared Brushfinch
- Gray-eared Laughingthrush
- Gray-eyed Bulbul
- Gray-eyed Greenlet
- Gray-faced Buzzard
- Gray-faced Liocichla
- Gray-faced Petrel
- Gray-faced Tit-Babbler
- Gray-faced Tit Babbler
- Gray-faced Woodpecker
- Gray-flanked Cinclodes
- Gray-fronted Dove
- Gray-fronted Green-Pigeon
- Gray-fronted Green Pigeon
- Gray-fronted Greenlet
- Gray-fronted Honeyeater
- Gray-fronted Quail-Dove
- Gray-green Bushshrike
- Gray-green Scrubwren
- Gray-headed Albatross
- Gray-headed Antbird
- Gray-headed Babbler
- Gray-headed Batis
- Gray-headed Bristlebill
- Gray-headed Broadbill
- Gray-headed Bulbul
- Gray-headed Bullfinch
- Gray-headed Bushshrike
- Gray-headed Canary-Flycatcher
- Gray-headed Canary Flycatcher
- Gray-headed Chachalaca
- Gray-headed Chickadee
- Gray-headed Cicadabird
- Gray-headed Crowtit
- Gray-headed Cuckoo-shrike
- Gray-headed Cuckooshrike
- Gray-headed Dove
- Gray-headed Fish-Eagle
- Gray-headed Fish Eagle
- Gray-headed Greenbul
- Gray-headed Gull
- Gray-headed Honeyeater
- Gray-headed Kingfisher
- Gray-headed Kite
- Gray-headed Lapwing
- Gray-headed Manakin
- Gray-headed Mollymawk
- Gray-headed Munia
- Gray-headed Myna
- Gray-headed Negrofinch
- Gray-headed Nigrita
- Gray-headed Oliveback
- Gray-headed Parrotbill
- Gray-headed Piprites
- Gray-headed Quail-Dove
- Gray-headed Silverbill
- Gray-headed Social-Weaver
- Gray-headed Sparrow
- Gray-headed Spinetail
- Gray-headed Starling
- Gray-headed Sunbird
- Gray-headed Swamphen
- Gray-headed Tanager
- Gray-headed Thrush
- Gray-headed Tody-Flycatcher
- Gray-headed Tody Flycatcher
- Gray-headed Warbler
- Gray-headed Whistler
- Gray-headed Woodpecker
- Gray-headed robin
- Gray-hooded Attila
- Gray-hooded Bunting
- Gray-hooded Bush-Tanager
- Gray-hooded Bush Tanager
- Gray-hooded Flycatcher
- Gray-hooded Fulvetta
- Gray-hooded Ground-Dove
- Gray-hooded Ground Dove
- Gray-hooded Gull
- Gray-hooded Ibon
- Gray-hooded Parakeet
- Gray-hooded Parrotbill
- Gray-hooded Sierra-Finch
- Gray-hooded Sierra Finch
- Gray-hooded Sunbird
- Gray-hooded Tanager
- Gray-hooded Warbler
- Gray-hooded White-eye
- Gray-legged Tinamou
- Gray-lined Hawk
- Gray-mantled Wren
- Gray-naped Antpitta
- Gray-necked Bunting
- Gray-necked Crow
- Gray-necked Friarbird
- Gray-necked Oriole
- Gray-necked Picathartes
- Gray-necked Rockfowl
- Gray-necked Wood-Rail
- Gray-necked Wood Rail
- Gray-necked wood-rail
- Gray-olive Greenbul
- Gray-rumped Swallow
- Gray-rumped Swift
- Gray-rumped Swiftlet
- Gray-sided Bush-Warbler
- Gray-sided Bush Warbler
- Gray-sided Flowerpecker
- Gray-sided Laughingthrush
- Gray-sided Scimitar-Babbler
- Gray-sided Scimitar Babbler
- Gray-sided Thrush
- Gray-streaked Flycatcher
- Gray-streaked Honeyeater
- Gray-striped Brush-Finch
- Gray-striped Brush Finch
- Gray-striped Francolin
- Gray-tailed Mountain-gem
- Gray-tailed Mountain Gem
- Gray-tailed Mountaingem
- Gray-tailed Piha
- Gray-tailed Tattler
- Gray-throated Babbler
- Gray-throated Barbet
- Gray-throated Bulbul
- Gray-throated Chat
- Gray-throated Ibon
- Gray-throated Leaftosser
- Gray-throated Martin
- Gray-throated Rail
- Gray-throated Sand-Martin
- Gray-throated Sunbird
- Gray-throated Tit-Flycatcher
- Gray-throated Warbler
- Gray-throated Warbling-Finch
- Gray-throated Warbling Finch
- Gray-throated White-eye
- Gray-winged Blackbird
- Gray-winged Bowbill
- Gray-winged Cotinga
- Gray-winged False-Sunbird
- Gray-winged False Sunbird
- Gray-winged Francolin
- Gray-winged Inca-Finch
- Gray-winged Inca-sparrow
- Gray-winged Inca Finch
- Gray-winged Inca Sparrow
- Gray-winged Longbill
- Gray-winged Robin-Chat
- Gray-winged Trumpeter
- Gray Antbird
- Gray Antwren
- Gray Apalis
- Gray Brush-Finch
- Gray Brush Finch
- Gray Brushfinch
- Gray Bunting
- Gray Bushchat
- Gray Butcherbird
- Gray Catbird
- Gray Cisticola
- Gray Crow
- Gray Crowned-Crane
- Gray Crowned Crane
- Gray Cuckoo-shrike
- Gray Currawong
- Gray Elaenia
- Gray Emu-tail
- Gray Falcon
- Gray Flycatcher
- Gray Francolin
- Gray Friarbird
- Gray Frog Hawk
- Gray Gerygone
- Gray Go-away-bird
- Gray Go-away Bird
- Gray Go Away Bird
- Gray Goshawk
- Gray Grasswren
- Gray Green Fruit dove
- Gray Greenbul
- Gray Ground-Jay
- Gray Ground-Thrush
- Gray Ground Jay
- Gray Ground Thrush
- Gray Gull
- Gray Hawk
- Gray Heron
- Gray Honeyeater
- Gray Hypocolius
- Gray Imperial-Pigeon
- Gray Jay
- Gray Junglefowl
- Gray Kestrel
- Gray Kingbird
- Gray Laughingthrush
- Gray Longbill
- Gray Mangrove Flycatcher-shrike
- Gray Monjita
- Gray Mountain Pachycephala
- Gray Nightjar
- Gray Noddy
- Gray Parrot
- Gray Partridge
- Gray Peacock-Pheasant
- Gray Peacock Pheasant
- Gray Petrel
- Gray Phalarope
- Gray Pileated Finch
- Gray Plover
- Gray Pratincole
- Gray Robin
- Gray Seedeater
- Gray Shrike-Robin
- Gray Shrike-thrush
- Gray Shrike Robin
- Gray Shrike Thrush
- Gray Sibia
- Gray Silky-flycatcher
- Gray Starling
- Gray Sunbird
- Gray Tapaculo
- Gray Teal
- Gray Thicket-flycatcher


