- Mackinnon's Shrike
- Maghreb Magpie
- Magnolia Warbler
- Magpie Shrike
- Malachite Kingfisher
- Malachite Sunbird
- Malagasy Coucal
- Malayan Laughingthrush
- Malayan Peacock-Pheasant
- Malaysian Partridge
- Malaysian Pied Fantail
- Malaysian Plover
- Mallard
- Manx Shearwater
- Marabou Stork
- Marico Flycatcher
- Marico Sunbird
- Maroon-breasted Philentoma
- Marsh Sandpiper
- Marsh Tit
- Marsh Warbler
- Martial Eagle
- Masked Booby
- Masked Shrike
- Meadow Pipit
- Mediterranean Gull
- Mediterranean Short-toed Lark
- Mekong Wagtail
- Melodious Warbler
- Mew Gull
- Meyer's Parrot
- Middle Spotted Woodpecker
- Milky Stork
- Mistle Thrush
- Mocking Cliff Chat
- Monk Parakeet
- Monotonous Lark
- Montagu's Harrier
- Montane Nightjar
- Moorland Chat
- Moorland Francolin
- Mosque Swallow
- Mountain Fulvetta
- Mountain Peacock-Pheasant
- Mountain Tailorbird
- Mountain Wagtail
- Mountain Wheatear
- Mourning Collared Dove
- Mourning Dove
- Mouse-colored Penduline Tit
- Moussier's Redstart
- Moustached Babbler
- Moustached Grass Warbler
- Moustached Warbler
- Mute Swan
- Myrtle Warbler