- Mackinnon's Shrike
- Madagascan Buttonquail
- Madagascan Cuckoo
- Madagascan Pratincole
- Magenta-throated Woodstar
- Magnificent Frigatebird
- Magnolia Warbler
- Magpie Shrike
- Magpie Starling
- Malabar Pied Hornbill
- Malabar Trogon
- Malachite Kingfisher
- Malachite Sunbird
- Malagasy Pond Heron
- Malagasy Turtle Dove
- Malindi Pipit
- Mallard
- Mandarin Duck
- Mangrove Hummingbird
- Mangrove Kingfisher
- Mangrove Swallow
- Mangrove Warbler
- Marabou Stork
- Marico Sunbird
- Marsh Sandpiper
- Marsh Tchagra
- Marsh Tit
- Marsh Warbler
- Marsh Widowbird
- Martial Eagle
- Mascarene Martin
- Mascarene Paradise Flycatcher
- Masked Lark
- Masked Tityra
- Meadow Pipit
- Mediterranean Gull
- Melodious Blackbird
- Melodious Warbler
- Merlin
- Mew Gull
- Mexican Violetear
- Meyer's Parrot
- Middle Spotted Woodpecker
- Mistle Thrush
- Mistletoe Tyrannulet
- Mocking Cliff Chat
- Mombasa Woodpecker
- Monk Parakeet
- Montagu's Harrier
- Montane Nightjar
- Montezuma Oropendola
- Moorland Chat
- Morelet's Seedeater
- Mosque Swallow
- Mottled Spinetail
- Mottled Swift
- Mountain Buzzard
- Mountain Elaenia
- Mountain Greenbul
- Mountain Masked Apalis
- Mountain Oriole
- Mountain Wagtail
- Mountain Yellow Warbler
- Mourning Collared Dove
- Mourning Dove
- Mourning Warbler
- Mouse-colored Penduline Tit
- Moustached Grass Warbler
- Moustached Tinkerbird
- Moustached Warbler
- Muscovy Duck
- Mute Swan
- Myrtle Warbler