- Magpie-lark
- Magpie Goose
- Magpie Shrike
- Malachite Kingfisher
- Mallard
- Mandarin Duck
- Marabou Stork
- Marbled Duck
- Masked Lapwing
- Masked Shrike
- Meadow Pipit
- Mediterranean Gull
- Mediterranean Short-toed Lark
- Melodious Warbler
- Mew Gull
- Mexican Violetear
- Milky Stork
- Monk Parakeet
- Montezuma Oropendola
- Moussier's Redstart
- Mute Swan
- Myrtle Warbler