Elgin Buzzard (undescribed form)
Palawan Cuckoo-Dove (undescribed form)
Teke Cisticola (undescribed form)
Timor Nightjar (undescribed form)
Mindanao Shortwing (undescribed form)
Ethiopian Martin (undescribed form)
Obi White-eye (undescribed form)
Bacan Drongo (undescribed form)
Mafwemiro Sunbird (undescribed form)
Selayar Leaf Warbler (undescribed form)
Bismarck Flyrobin (undescribed form)
White-spotted Boobook (undescribed form)
Great Nicobar Crake (undescribed form)
Mount Mutis Parrotfinch (undescribed form)
Mallard x Pacific Black Duck (hybrid)
Carrion x Hooded Crow (hybrid)
Graylag x Canada Goose (hybrid)
Fischer's x Yellow-collared Lovebird (hybrid)
House x Spanish Sparrow (hybrid)
Mallard x Eastern Spot-billed Duck (hybrid)
Chinese x Taiwan Hwamei (hybrid)
House x Italian Sparrow (hybrid)
Herring x Glaucous Gull (hybrid)
Eastern Black-eared x Pied Wheatear (hybrid)
Pied x Black Stilt (hybrid)
Barnacle x Canada Goose (hybrid)
Cinnamon Teal x Northern Shoveler (hybrid)
Black-backed x Gray-headed Swamphen (hybrid)
Black-headed x Mediterranean Gull (hybrid)
Common Pochard x Ferruginous Duck (hybrid)
Milky x Painted Stork (hybrid)
Common Pochard x Tufted Duck (hybrid)
Rainbow x Red-collared Lorikeet (hybrid)
Light-vented x Styan's Bulbul (hybrid)
Herring x Lesser Black-backed Gull (hybrid)
Mallard x Common Eider (hybrid)
Crimson x Eastern Rosella (hybrid)
Mallard x Northern Pintail (hybrid)
Dusky x Naumann's Thrush (hybrid)
Little Egret x Western Reef-Heron (hybrid)
Eurasian Wigeon x Northern Pintail (hybrid)
Gadwall x Mallard (hybrid)
Ring-billed x Lesser Black-backed Gull (hybrid)
Egyptian Goose x Ruddy Shelduck (hybrid)
Graylag x Barnacle Goose (hybrid)
Snow x Ross's Goose (hybrid)
Wood Duck x Mallard (hybrid)
Tufted Duck x Greater Scaup (hybrid)
Common x Long-legged Buzzard (hybrid)
Crimson x Pale-headed Rosella (hybrid)
Black-throated x Red-throated Thrush (hybrid)
Scaly-breasted x Rainbow Lorikeet (hybrid)
Eastern x Pale-headed Rosella (hybrid)
Lesser x Greater Spotted Eagle (hybrid)
Black-headed x Red-headed Bunting (hybrid)
European x Oriental Honey-buzzard (hybrid)
Emperor x Barnacle Goose (hybrid)
Red-crested Pochard x Tufted Duck (hybrid)
Italian x Spanish Sparrow (hybrid)
House x Eurasian Tree Sparrow (hybrid)
Domestic goose sp. x Canada Goose (hybrid)
South Island x Variable Oystercatcher (hybrid)
Chilean x American Flamingo (hybrid)
Ring-necked x Tufted Duck (hybrid)
Red-crested x Common Pochard (hybrid)
Red-vented x White-eared Bulbul (hybrid)
Bar-headed x Barnacle Goose (hybrid)
Yellow-throated x Black-eared Miner (hybrid)
Superb x Red-backed Fairywren (hybrid)
Eurasian x African Collared-Dove (hybrid)
Ferruginous Duck x Baer's Pochard (hybrid)
Green x Eastern Rosella (hybrid)
Eurasian x Red-knobbed Coot (hybrid)
Northern Shoveler x Mallard (hybrid)
Red-backed x Red-tailed Shrike (hybrid)
Western Capercaillie x Black Grouse (hybrid)
Tricolored x Chestnut Munia (hybrid)
Tanimbar Corella x Yellow-crested Cockatoo (hybrid)
Red-vented x Sooty-headed Bulbul (hybrid)
Eurasian x American Wigeon (hybrid)
Gadwall x Green-winged Teal (hybrid)
Hen x Pallid Harrier (hybrid)
European Pied x Collared Flycatcher (hybrid)
Bar-headed x Graylag Goose (hybrid)
Eurasian Wigeon x Mallard (hybrid)
Barnacle x Cackling Goose (hybrid)
lorikeet sp. (Musk/Rainbow/Scaly-breasted Lorikeet hybrid)
Little x Long-billed Corella (hybrid)
Musk x Rainbow Lorikeet (hybrid)
Mallard x Red-crested Pochard (hybrid)
Snow x Barnacle Goose (hybrid)
Yellow-billed Duck x Mallard (hybrid)
Yellowhammer x Pine Bunting (hybrid)
Western Yellow x Citrine Wagtail (hybrid)
Indian x Indochinese Roller (hybrid)
Ross's x Barnacle Goose (hybrid)
Muscovy Duck x Mallard (hybrid)
Bar-headed x Canada Goose (hybrid)
Indian x Green Peafowl (hybrid)
Caspian x Herring Gull (hybrid)
Great x Chinese Crested Tern (hybrid)
Gray-headed x Eurasian Green Woodpecker (hybrid)
Great Spotted x Syrian Woodpecker (hybrid)
Greater White-fronted x Barnacle Goose (hybrid)
Common x Hooded Crane (hybrid)
White-faced x Fulvous Whistling-Duck (hybrid)
Ring-necked x Green Pheasant (hybrid)
Lesser White-fronted x Barnacle Goose (hybrid)
Black-headed x African Paradise-Flycatcher (hybrid)
Blacksmith x White-crowned Lapwing (hybrid)
Gadwall x Falcated Duck (hybrid)
African x Gray-headed Swamphen (hybrid)
Glaucous x Glaucous-winged Gull (hybrid)
Ferruginous x Tufted Duck (hybrid)
European Goldfinch x Island Canary (hybrid)
Galah x Little Corella (hybrid)
Graylag x Swan Goose (hybrid)
Great Egret x Gray Heron (hybrid)
Eurasian Blue x Azure Tit (hybrid)
Chilean x Greater Flamingo (hybrid)
Eurasian Moorhen x Eurasian Coot (hybrid)
Bar-headed x Snow Goose (hybrid)
House x Somali Sparrow (hybrid)
Baikal Teal x Northern Pintail (hybrid)
Black-rumped x Red-backed Flameback (hybrid)
Brown-rumped x Rosy Minivet (hybrid)
New Holland x White-cheeked Honeyeater (hybrid)
Snow x Canada Goose (hybrid)
Eurasian x Black-faced Spoonbill (hybrid)
Glaucous-winged x Slaty-backed Gull (hybrid)
Tufted Duck x scaup sp. (hybrid)
Pacific Black Duck x Northern Pintail (hybrid)
Blue-winged x Cinnamon Teal (hybrid)
Common x Ring-billed Gull (hybrid)
Common Goldeneye x Smew (hybrid)
Mallard x Indian Spot-billed Duck (hybrid)
Masked x White-browed Woodswallow (hybrid)
Eurasian x Chiloe Wigeon (hybrid)
Slender-billed x Brown-headed Gull (hybrid)
Greater White-fronted x Canada Goose (hybrid)
Barn Swallow x Western House-Martin (hybrid)
Pacific Black Duck x Chestnut Teal (hybrid)
Common x Great Myna (hybrid)
Little Corella x Sulphur-crested Cockatoo (hybrid)
Tufted Duck x Lesser Scaup (hybrid)
Pale-headed x Bamboo Woodpecker (hybrid)
Caspian x Yellow-legged Gull (hybrid)
Northern Shoveler x Gadwall (hybrid)
Red-crowned x Chatham Islands Parakeet (hybrid)
Southern x Damara Red-billed Hornbill (hybrid)
White-throated x Spot-breasted Fantail (hybrid)
Gray x Purple Heron (hybrid)
Mallard x Brown Teal (hybrid)
Gadwall x Eurasian Wigeon (hybrid)
Yellow-legged x Lesser Black-backed Gull (hybrid)
Curlew x Pectoral Sandpiper (hybrid)
Swan Goose x Canada Goose (hybrid)
Raggiana x Greater Bird-of-Paradise (hybrid)
Pallid x Montagu's Harrier (hybrid)
Rose-ringed x Plum-headed Parakeet (hybrid)
Pacific Black Duck x Gray Teal (hybrid)
Black x White Stork (hybrid)
Yellow-legged x Great Black-backed Gull (hybrid)
Gray-hooded x Hartlaub's Gull (hybrid)
Sandwich x Elegant Tern (hybrid)
Slender-billed x Black-headed Gull (hybrid)
Belford's x Yellow-browed Melidectes (hybrid)
Common x Roseate Tern (hybrid)
Common x Black Redstart (hybrid)
Ruddy x Common Shelduck (hybrid)
Gray x Chestnut Teal (hybrid)
Baikal x Green-winged Teal (hybrid)
Red-backed x Woodchat Shrike (hybrid)
Red-crowned x Yellow-crowned Parakeet (hybrid)
European Turtle-Dove x Eurasian Collared-Dove (hybrid)
Herring x Great Black-backed Gull (hybrid)
Mallard x Tufted Duck (hybrid)
Greater White-fronted Goose x Tundra Bean-Goose (hybrid)
Common Goldeneye x Hooded Merganser (hybrid)
Bank x Barn Swallow (hybrid)
Bar-headed x Greater White-fronted Goose (hybrid)
Eurasian Wigeon x Green-winged Teal (hybrid)
Red-crested Pochard x Ferruginous Duck (hybrid)
Red-legged x Rock Partridge (hybrid)
Herring x Glaucous-winged Gull (hybrid)
Golden x Lady Amherst's Pheasant (hybrid)
Snow x Greater White-fronted Goose (hybrid)
Northern Bobwhite x California Quail (hybrid)
Mallard x American Black Duck (hybrid)
Common x Arctic Tern (hybrid)
American Wigeon x Northern Pintail (hybrid)
Miombo x Pied Barbet (hybrid)
Stephanie's x Ribbon-tailed Astrapia (hybrid)
Mute x Black Swan (hybrid)
Graylag Goose x Mute Swan (hybrid)
Spotted x White-faced Whistling-Duck (hybrid)
King x Common Eider (hybrid)
Wood x Western Bonelli's Warbler (hybrid)
Snow/Ross's x Cackling/Canada Goose (hybrid)
Smew x Hooded Merganser (hybrid)
Great Black-backed x Glaucous Gull (hybrid)
Ross's x Cackling Goose (hybrid)
Black-naped Monarch x Blyth's Paradise-Flycatcher (hybrid)
Common x Baer's Pochard (hybrid)
Little x Australian Fairy Tern (hybrid)
Plumed x Wandering Whistling-Duck (hybrid)
Mallard x White-cheeked Pintail (hybrid)
Indian Pied x Chestnut-tailed Starling (hybrid)
Wood x Mandarin Duck (hybrid)
Common Redstart x Whinchat (hybrid)
Mallard x Common Pochard (hybrid)
Javan x Great Myna (hybrid)
Blue-and-yellow x Scarlet Macaw (hybrid)
Blue-winged Teal x Northern Shoveler (hybrid)
Gadwall x Northern Pintail (hybrid)
Mallard x Green-winged Teal (hybrid)
Tiger x Brown Shrike (hybrid)
Northern Pintail x Green-winged Teal (hybrid)
Buffy x Brown Fish-Owl (hybrid)
Bar-tailed x Hudsonian Godwit (hybrid)
Gray Teal x Hardhead (hybrid)
Greater White-fronted x Cackling Goose (hybrid)
Jungle x Great Myna (hybrid)
Ruddy x White-headed Duck (hybrid)
Barn x Red-rumped Swallow (hybrid)
Baikal Teal x Falcated Duck (hybrid)
Black-winged x Pied Stilt (hybrid)
Pied x Somali Crow (hybrid)
Mediterranean x Common Gull (hybrid)
Pale-chinned x Tickell's Blue Flycatcher (hybrid)
Double-barred x Zebra Finch (hybrid)
Olive-naped x Black-necked Weaver (hybrid)
Glaucous x Slaty-backed Gull (hybrid)
Eurasian x Iberian Green Woodpecker (hybrid)
Common x Hoary Redpoll (hybrid)
Snow Goose x Brant (hybrid)
Sandhill x Common Crane (hybrid)
Garganey x Northern Shoveler (hybrid)
Brewster's Warbler (hybrid)
Great Knot x Surfbird (hybrid)
Emperor x Cackling Goose (hybrid)
Garganey x Green-winged Teal (hybrid)
Great White x Dalmatian Pelican (hybrid)
Vinous-throated x Ashy-throated Parrotbill (hybrid)
Willow Tit x Gray-headed Chickadee (hybrid)
Mute x Whooper Swan (hybrid)
Black-collared Starling x Great Myna (hybrid)
Common x Barrow's Goldeneye (hybrid)
Bufflehead x Common Goldeneye (hybrid)
Brant x Red-breasted Goose (hybrid)
Black-headed x Common Gull (hybrid)
Blue-winged x Green-winged Teal (hybrid)
White-cheeked x Prince Ruspoli's Turaco (hybrid)
Ross's x Canada Goose (hybrid)
Edwards's x Silver Pheasant (hybrid)
Gadwall x American Wigeon (hybrid)
Arctic/Kamchatka Leaf Warbler
Red-whiskered/Red-vented Bulbul
Bianchi's/Martens's/Alström's Warbler
Domestic goose sp. (Domestic type)
Willow Warbler/Common Chiffchaff
Thrush/Common Nightingale
House/Eurasian Tree Sparrow
Eurasian/Short-toed Treecreeper
Great Cormorant/European Shag
European/Spotless Starling
Western/Siberian House-Martin
moorhen/coot/gallinule sp.
Caspian/Yellow-legged Gull
Yellow-legged/Lesser Black-backed Gull
Brown Goshawk/Collared Sparrowhawk
Snowy/Tristan/Antipodean Albatross
Goldcrest/Common Firecrest
Thick-billed/Pale-billed Flowerpecker
Yellow-browed/Hume's Warbler
Caspian/Herring/Yellow-legged Gull
Eurasian/Red Collared-Dove
Red-billed/Yellow-billed Chough
Common/Red-breasted Merganser
Helopsaltes/Locustella sp.
Japanese Leaf/Arctic/Kamchatka Leaf Warbler
Ashy/Brown-rumped Minivet
Spot-breasted/White-browed Fantail
Eurasian/Indian Golden Oriole
Chestnut-and-black/Vieillot's Black Weaver
cuckoo sp. (Cuculidae sp.)
Far Eastern/Eurasian Curlew
Swinhoe's/Pin-tailed Snipe
Lineated/Brown-headed Barbet
Great Spotted/Syrian Woodpecker
Brown-capped/Gray-capped Pygmy Woodpecker
Northern/Southern Fiscal (Common Fiscal)
Greater/Lesser Green Leafbird
Australasian/Hoary-headed Grebe
Common/Iberian Chiffchaff
European/Siberian Stonechat
Atlantic/Indian Yellow-nosed Albatross
Japanese/Manchurian Bush Warbler
Marsh/Common Reed Warbler
Pale-billed/Nilgiri Flowerpecker
Phylloscopus sp. (Golden-spectacled Warbler complex)
Blyth's/Claudia's/Hartert's Leaf Warbler
Tasmanian/Brown Thornbill
Black-winged/Collared Pratincole
Herring/Yellow-legged Gull
Blue-throated/Tickell's Blue Flycatcher
Common/Great Reed Warbler
Yelkouan/Balearic Shearwater
Taiga/Red-breasted Flycatcher
Black-bellied Plover/golden-plover sp.
Asian Barred/Jungle Owlet
Eastern Cattle/Medium Egret
Bassian/Russet-tailed Thrush
Indian/Eastern Spot-billed Duck
Jerdon's/Golden-fronted Leafbird
Black-headed/Mediterranean Gull
Eurasian Sparrowhawk/Eurasian Goshawk
Southern/Northern Giant-Petrel
Levant/Eurasian Sparrowhawk
Ring-necked/Green Pheasant
Jungle/Yellow-billed Babbler
White-browed/Spotted Scrubwren
Little Egret/Western Reef-Heron
Malabar/Coppersmith Barbet
Restless/Paperbark Flycatcher
Black-faced/Masked Bunting
Lesser/Gray-headed Fish-Eagle
Kentish/White-faced Plover
Chestnut-tailed/Malabar Starling
minivet sp. (red minivet sp.)
Alexandrine/Rose-ringed Parakeet
Himalayan/Oriental Cuckoo
Red-necked/Eurasian Nightjar
Blue-cheeked/Blue-tailed Bee-eater
Caspian/Yellow-legged/Armenian Gull
Fork-tailed/Square-tailed Drongo-Cuckoo
Gray-tailed/Wandering Tattler
Brown-headed/White-cheeked Barbet
Common/Little Ringed Plover
European Pied/Collared/Semicollared Flycatcher
Gray-headed/Eurasian Green Woodpecker
Lesser/Greater Spotted Eagle
Indian/Indochinese Roller
Scaly-breasted/Rainbow Lorikeet
Olive-naped/Black-necked Weaver
White-throated/White-browed Fantail
woodhoopoe/scimitarbill sp.
Cream-vented/Cream-eyed Bulbul
Streak-breasted/White-browed Scimitar-Babbler
Gull-billed/Australian Tern
Greater Short-toed Lark/Alaudala sp.
Greenish/Large-billed Leaf Warbler
Mallard/Pacific Black Duck
Black-headed/Brown-headed Gull
Rufous-naped/Rufous-vented Tit
black-and-white shearwater sp.
Siberian/Tibetan Sand-Plover
White-browed/White Wagtail
Purple-backed/Variegated Fairywren
Gray-rumped/Ridgetop Swiftlet
Western/Eastern Yellow Wagtail
Western/Eastern Cattle Egret
Pale-legged/Sakhalin Leaf Warbler
Richard's/Paddyfield Pipit
Fulvous/Lesser Whistling-Duck
European Pied/Atlas Flycatcher
Yellow-bellied/Ashy Prinia
Rufescent/Gray-breasted Prinia
Red-rumped/Striated Swallow
Bay-backed/Long-tailed Shrike
Hoary-throated/Streak-throated Barwing
Common Chaffinch/Brambling
Himalayan/Eurasian Griffon
Common/Dark-necked Tailorbird
European/Oriental Honey-buzzard
Light-vented/Styan's Bulbul
Japanese Sparrowhawk/Besra
Red-cowled/Red-collared Widowbird
Melodious/Icterine Warbler
Common/Long-legged Buzzard
Eurasian/Oriental Skylark
Oriental/Collared Pratincole
Black-headed/Red-headed Bunting
Lesser/Greater Racket-tailed Drongo
Western/Eastern Subalpine Warbler
Little/Australian Fairy Tern
Lesser/Greater Necklaced Laughingthrush
Lesser/Greater Yellownape
Parasitic/Pomarine Jaeger
Hutton's/Fluttering Shearwater
Black/Amur Paradise-Flycatcher
Yellow-rumped/Green-backed/Narcissus/Ryukyu Flycatcher
Greater Short-toed/Hume's Lark
Mediterranean/Turkestan Short-toed Lark
Narcissus/Ryukyu Flycatcher
Amur Falcon/Eurasian Hobby
Moltoni's/Western/Eastern Subalpine Warbler
Sooty/Short-tailed Shearwater
Amur/Blyth's Paradise-Flycatcher
Asian Brown/Brown-streaked Flycatcher
storm-petrel sp. (white-rumped)
Long-tailed/Pomarine Jaeger
fulvetta sp. (genus Fulvetta)
Shining/Little Bronze-Cuckoo
Mountain/Common Chiffchaff
Chinese/Taiwan Bamboo-Partridge
Nordmann's/Common Greenshank
Gray-throated Martin/Bank Swallow
Black-backed/Rufous-backed Dwarf-Kingfisher
Long-eared/Short-eared Owl
Silver-breasted/Gray-lored Broadbill
Great/Yellow-billed Egret
Davison's/Kloss's Leaf Warbler
Yellow-billed/Red-billed Blue-Magpie
Siberian/Asian House-Martin
Masked/White-browed Woodswallow
white-bellied swiftlet sp.
African/Malagasy Sacred Ibis
Blue-eared/Black-eared Barbet
Mitred/Red-masked Parakeet
Swinhoe's/Indian White-eye
Gray-streaked/Dark-sided Flycatcher
White-throated/Spot-breasted Fantail
Zitting/Golden-headed Cisticola
Iduna/Hippolais/Acrocephalus sp.
White-nest/Germain's Swiftlet (Edible-nest Swiftlet)
Willow Warbler/Common Chiffchaff/Iberian Chiffchaff
Common/Blue-eared Kingfisher
Indian/Greater Spotted Eagle
Brown/Russet Bush Warbler
Ortolan/Cretzschmar's Bunting
Eurasian Moorhen/Common Gallinule
pitta sp. (genus Erythropitta/Hydrornis/Pitta)
Indian Golden/Black-naped Oriole
Southern/Tasmanian Boobook
Swinhoe's/Hume's White-eye
Hydrobates sp. (Band-rumped complex)
Green-eared/Lineated Barbet
Greenish/Two-barred Warbler
corella/white cockatoo sp.
White-backed Vulture/Rüppell's Griffon
Black-rumped/Red-backed Flameback
Domestic lovebird sp. (Domestic type)
White-backed Vulture/Cape Griffon
Red-tailed/Isabelline Shrike
Sulphur-bellied/Tickell's Leaf Warbler
Radde's/Yellow-streaked/Dusky Warbler
Red-flanked/Himalayan Bluetail
Common/Yellow-billed Loon
Spotted/Little/Baillon's Crake
Plaintive/Gray-bellied Cuckoo
Himalayan/Eastern Buzzard
Eastern/Western Olivaceous Warbler
Red-billed/Yellow-billed Oxpecker
Microtarsus/Rubigula/Pycnonotus sp.
Blue-and-white/Zappey's Flycatcher
Yellow-billed/Medium Egret
Northern/Southern Royal Albatross
Herring/Lesser Black-backed Gull
Red-tailed/Isabelline/Brown Shrike
Western/Eastern Black-eared Wheatear
Baikal/Spotted Bush Warbler
Eurasian/African Collared-Dove
Black-crowned/Nankeen Night Heron
storm-petrel sp. (dark-rumped)
Miombo/Stierling's Wren-Warbler
Sharp-tailed/Pectoral Sandpiper
Northern/Western Black-eared/Eastern Black-eared Wheatear
Dark-necked/Ashy Tailorbird
Olive-winged/Stripe-throated Bulbul
Red-tailed/White-bearded Greenbul
Bohemian/Japanese Waxwing
Bar-tailed/Black-tailed Godwit
Paddyfield/Blyth's Reed Warbler
Eurasian/Cyprus Scops-Owl
Northern/Great Gray Shrike
Greater/Mongolian Short-toed Lark
Garganey/Green-winged Teal
Green-crowned/Whistler's Warbler
Slender-billed/Black-headed Gull
Asian/Turkestan Short-toed Lark
Rhinoceros/Great Hornbill
White-bellied/Black-bellied Storm-Petrel
Arborophila/Tropicoperdix sp.
Black-throated/Red-throated Thrush
Eurasian/Red-knobbed Coot
Malabar/Common Woodshrike
Asian Emerald/Violet Cuckoo
Lemon-rumped/Sichuan Leaf Warbler
Amur/Blyth's/Indian Paradise-Flycatcher
minivet sp. (gray minivet sp.)
Pink-browed/Himalayan White-browed Rosefinch
Thick-billed/Common Murre
Western/Eastern Miombo Sunbird
Eurasian/Iberian Green Woodpecker
Large/Hill Blue Flycatcher
Eastern Black-eared/Pied Wheatear
Daurian/Chestnut-cheeked Starling
Large/Black-headed Cuckooshrike
Long-tailed/Parasitic Jaeger
Blue-throated/Chinese Blue Flycatcher
Malabar/Oriental Pied-Hornbill
Western/Eastern Marsh Harrier
Greater/Lesser Vasa Parrot
Darjeeling/Crimson-naped Woodpecker
Bimaculated/Calandra Lark
Malayan/Japanese Night Heron
australian treecreeper sp.
Eastern Yellow/Citrine Wagtail
Great-winged/Gray-faced Petrel
Citril Finch/European Serin
Carrion/Large-billed Crow
Ferruginous Duck/Baer's Pochard
Whinchat/European Stonechat
White-browed/Collared Bush-Robin
Gray-faced/Pin-striped Tit-Babbler
Black-crowned/Red-billed Scimitar-Babbler
Gray-crowned/Whistler's Warbler
Burmese/Vinous-breasted Myna
Common/Himalayan/Eastern Buzzard
Scaly-breasted/Immaculate Cupwing
Gray-bellied/Slaty-bellied Tesia
Black-backed/Gray-headed Swamphen
Brownish-flanked/Yellowish-bellied Bush Warbler
Eurasian/American Goshawk
Black-browed/Manchurian Reed Warbler
Blunt-winged/Manchurian Reed Warbler
large macaw sp.
Siberian/White-tailed Stonechat
West African/Congo Pied Hornbill
Blue-winged/Cinnamon Teal
Eurasian Crag-Martin/Rock Martin
American/Greater Flamingo
Poodytes/Cincloramphus/Megalurus sp.
Indian/Chestnut-bellied Nuthatch
Ianthocincla/Pterorhinus sp.
Gray-crowned/Bianchi's Warbler
Common/Barrow's Goldeneye
Himalayan/Chinese Rubythroat (White-tailed Rubythroat)
Greater/Lesser White-fronted Goose
Banded/Black-and-yellow Broadbill
Great/Oriental/Clamorous Reed Warbler
Cinnamon/Schrenck's Bittern
Eurasian/Pallid Scops-Owl
White-throated Bushchat/Siberian Stonechat
Mongolian Short-toed/Hume's Lark
Wreathed/Plain-pouched Hornbill
Gray-sided/Eyebrowed Thrush
Porzana/Zapornia/Hapalocrex sp.
Pale-eyed/Stripe-throated Bulbul
Black-crowned/Brown-crowned Scimitar-Babbler
Green/Northern Yellow White-eye
Streaked/Black-breasted Weaver
Paddyfield/Blunt-winged/Blyth's/Large-billed Reed Warbler
Long-legged/Upland Buzzard
Yellowhammer/Pine Bunting
Indian/Malabar Gray Hornbill
Cory's/Cape Verde Shearwater
Brown-crowned/Red-billed Scimitar-Babbler
Tibetan/Himalayan Snowcock
White-capped/Salvin's/Chatham Albatross
Streak-breasted/Laced Woodpecker
Short-billed/Long-billed Dowitcher
Kurdish/Persian Wheatear (Red-tailed Wheatear)
Japanese Leaf/Arctic Warbler
Velvet-fronted/Yellow-billed Nuthatch
Yellow-billed/Orange-billed Lorikeet
Salvin's/MacGillivray's Prion
Meliphaga/Territornis/Microptilotis sp.
Sharpe's/Square-tailed Drongo
Xavier's/Icterine Greenbul
Blue/Dimorphic Jewel-babbler
European Pied/Collared Flycatcher
Middendorff's/Pleske's Grasshopper Warbler
Barolo/Boyd's Shearwater (Macaronesian Shearwater)
Baglafecht/Bannerman's Weaver
Amazona sp.
Chinese Gray/Giant Shrike
Streak-headed/White-spotted Munia
Velvet/White-winged/Stejneger's Scoter
Square-tailed Sawwing/Forest Swallow
Eastern Cattle/Plumed Egret
White-winged/Stejneger's Scoter
Northern/Southern Variable Pitohui
Gray's/Sakhalin Grasshopper Warbler
Rufous/White-browed Piculet
Graceful/Elegant Honeyeater
Arabian/Asian Green Bee-eater
West African Crested/Royal Tern
Eurasian/Dusky Crag-Martin
American/Pacific Golden-Plover (Lesser Golden-Plover)
Mountain Tailorbird/Broad-billed Warbler
Lesser/Greater Yellowlegs
Brown-throated/Gray-throated Sunbird
Orange River/Cape White-eye
Temminck's/Crimson Sunbird
Scarlet-fronted/Cordilleran Parakeet
Blyth's/Indian Paradise-Flycatcher
Black-browed/Mountain Fulvetta
Rüppell's/Eurasian Griffon
Little/Subantarctic Shearwater
Silvereye/Layard's White-eye
Common Ringed/Semipalmated Plover
Greater/Lesser Striped Swallow
Lanceolated/Common Grasshopper Warbler
Pyrrhura sp.
Arafura/Rufous Shrikethrush
Swinhoe's/Warbling White-eye
Western/Eastern Bonelli's Warbler
Mallard/Eastern Spot-billed Duck
Himalayan/Chinese Shortwing
Asian/Pacific Emerald Dove
White-crowned/Bornean Forktail
Gray-necked/Ortolan Bunting
Fischer's/Yellow-collared Lovebird
Shelley's/Whyte's Francolin
White-browed Bushchat/Siberian Stonechat
Haliaeetus/Icthyophaga sp.
Chestnut-bellied/Burmese Nuthatch
Chestnut-bellied/Varied Tit
Crimson-naped/Necklaced Woodpecker
Common/Great Black Hawk
Nilgiri/Verditer Flycatcher
Red-legged/Rock Partridge
Western/Eastern Rock Nuthatch
Limestone Leaf/Sulphur-breasted Warbler
Alder/Willow Flycatcher (Traill's Flycatcher)
Western/Eastern Orphean Warbler
Himalayan/Common Flameback
Chinese/Baikal Bush Warbler
Tricolored/Chestnut Munia
Scarlet/Red-and-green Macaw
Rainbow/Red-collared Lorikeet
Leach's/Townsend's Storm-Petrel (dark-rumped)
European/Fire-fronted/Syrian Serin
Iberian Gray/Great Gray Shrike
Mallard/American Black Duck
Brown/Gray-headed Bullfinch
Black-legged/Red-legged Kittiwake
Tibetan/White Eared-Pheasant
Yellow-casqued/Black-casqued Hornbill
Shining-green/Sapphire-throated/Sapphire-bellied Hummingbird
Black-necked/Spectacled Weaver
Western/Eastern Dwarf Hornbill
Greater Vasa/Comoro Black Parrot
Amboyna/Sultan's Cuckoo-Dove
Bannerman's/Tropical Shearwater
Green-backed/Hartert's Camaroptera
Fiji/Black-throated Shrikebill
Winding/Coastal/Luapula Cisticola
Yellow-crowned/Black-crowned Night Heron
Western/Semipalmated Sandpiper
Nightingale Island/Wilkins's Finch
Rufous-winged/Maroon-breasted Philentoma
Melanocharis berrypecker sp.
Gray-cheeked/Bicknell's Thrush
Alpine/Himalayan/Sichuan Thrush
Aceh/Orange-spotted Bulbul