- Magnificent Frigatebird
- Magnolia Warbler
- Malachite Kingfisher
- Malagasy Turtle Dove
- Malaysian Pied Fantail
- Malaysian Plover
- Mallard
- Mandarin Duck
- Mangrove Cuckoo
- Mangrove Warbler
- Marabou Stork
- Marsh Sandpiper
- Marsh Warbler
- Mascarene Martin
- Masked Booby
- Masked Tityra
- Mauritius Fody
- Mauritius Grey White-eye
- Mauritius Kestrel
- Meadow Pipit
- Mediterranean Gull
- Melodious Warbler
- Merlin
- Meves's Starling
- Mew Gull
- Milky Stork
- Mistle Thrush
- Monk Parakeet
- Mourning Dove
- Moussier's Redstart
- Mute Swan