- Madagascar Buttonquail
- Madagascar Buzzard
- Madagascar Green Pigeon
- Madagascar Magpie-Robin
- Madagascar Mannikin
- Madagascar Wagtail
- Madeira Chaffinch
- Madeira Firecrest
- Magellanic Oystercatcher
- Magellanic Penguin
- Magnificent Frigatebird
- Malachite Kingfisher
- Malagasy Bulbul
- Malagasy Coucal
- Malagasy Kestrel
- Malagasy Paradise Flycatcher
- Malagasy Pond Heron
- Malagasy Turtle Dove
- Malagasy White-eye
- Malindi Pipit
- Mallard
- Mandarin Duck
- Mangrove Cuckoo
- Mangrove Warbler
- Manx Shearwater
- Marbled Duck
- Marico Sunbird
- Marmora's Warbler
- Marsh Sandpiper
- 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 Collared Dove
- Mourning Dove
- Mute Swan