- Madagascar Buttonquail
- Madeira Chaffinch
- Madeira Firecrest
- Magellanic Oystercatcher
- Magellanic Penguin
- Magnificent Frigatebird
- Malagasy Turtle Dove
- Malindi Pipit
- Mallard
- Mandarin Duck
- Mangrove Cuckoo
- Mangrove Warbler
- Manx Shearwater
- Marbled Duck
- Marmora's Warbler
- Marsh Tit
- Martial Eagle
- Mascarene Paradise Flycatcher
- Mascarene Swiftlet
- Mauritius Bulbul
- Mauritius Fody
- Mauritius Grey White-eye
- Mauritius Olive White-eye
- Meadow Pipit
- Mediterranean Gull
- Melodious Warbler
- Middle Spotted Woodpecker
- Mistle Thrush
- Monk Parakeet
- Montagu's Harrier
- Morelet's Seedeater
- Mourning Dove
- Mute Swan