- Madagascan Blue Pigeon
- Madagascan Ibis
- Magpie Shrike
- Major Mitchell's Cockatoo
- Makatea Fruit Dove
- Malagasy Sacred Ibis
- Malayan Peacock-Pheasant
- Mallard
- Mandarin Duck
- Maned Duck
- Marabou Stork
- Marbled Duck
- Marsh Tit
- Masked Lapwing
- Meadow Pipit
- Mediterranean Gull
- Melodious Warbler
- Metallic Pigeon
- Mew Gull
- Middle Spotted Woodpecker
- Military Macaw
- Mindanao Lorikeet
- Mistle Thrush
- Moluccan King Parrot
- Monk Parakeet
- Mrs. Hume's Pheasant
- Muscovy Duck
- Mute Swan