- Magenta-throated Woodstar
- Magnificent Frigatebird
- Magpie Shrike
- Malachite Kingfisher
- Malagasy Turtle Dove
- Marabou Stork
- Marbled Duck
- Marsh Tit
- Marsh Warbler
- Mascarene Martin
- Masked Flowerpiercer
- Masked Tityra
- Mato Grosso Antbird
- Mauritius Bulbul
- Mauritius Cuckooshrike
- Mauritius Fody
- Mauritius Olive White-eye
- Meadow Pipit
- Mediterranean Gull
- Mediterranean Short-toed Lark
- Merlin
- Mew Gull
- Middle Spotted Woodpecker
- Mistle Thrush
- Monk Parakeet
- Montagu's Harrier
- Mourning Collared Dove
- Mourning Dove
- Muscovy Duck
- Mute Swan