- Mackinnon's Shrike
- Macleay's Honeyeater
- Madagascan Blue Pigeon
- Madagascan Buttonquail
- Madagascan Buzzard
- Madagascan Cuckoo-Hawk
- Madagascan Cuckooshrike
- Madagascan Fish Eagle
- Madagascan Green Pigeon
- Madagascan Harrier-Hawk
- Madagascan Hoopoe
- Madagascan Jacana
- Madagascan Lark
- Madagascan Magpie-Robin
- Madagascan Nightjar
- Madagascan Pygmy Kingfisher
- Madagascan Sparrowhawk
- Madagascan Stonechat
- Madagascan Wagtail
- Magellanic Penguin
- Magnificent Frigatebird
- Magpie-lark
- Magpie Goose
- Magpie Shrike
- Magpie Starling
- Malachite Kingfisher
- Malachite Sunbird
- Malagasy Bulbul
- Malagasy Coucal
- Malagasy Kestrel
- Malagasy Kingfisher
- Malagasy Paradise Flycatcher
- Malagasy Sacred Ibis
- Malagasy Turtle Dove
- Mallard
- Maned Duck
- Mangrove Warbler
- Marabou Stork
- Marico Flycatcher
- Marico Sunbird
- Maroon-bellied Parakeet
- Marquesan Imperial Pigeon
- Marsh Sandpiper
- Marsh Tit
- Martial Eagle
- Masked Lapwing
- Masked Water Tyrant
- Meadow Pipit
- Mediterranean Gull
- Mediterranean Short-toed Lark
- Medium Ground Finch
- Meller's Duck
- Melodious Warbler
- Meves's Starling
- Mew Gull
- Mexican Violetear
- Meyer's Parrot
- Miombo Blue-eared Starling
- Mistle Thrush
- Mistletoebird
- Mombasa Woodpecker
- Monk Parakeet
- Montagu's Harrier
- Mottled Duck
- Mountain Bulbul
- Mountain Caracara
- Mountain Wagtail
- Mountain Wheatear
- Mourning Collared Dove
- Mourning Dove
- Moustached Wren
- Mrs. Gould's Sunbird
- Muscovy Duck
- Mute Swan
- Myrtle Warbler