| Common Name | Scientific name |
|---|---|
| Menetries's Warbler | Sylvia mystacea |
| Merlin | Falco columbarius |
| Mew Gull | Larus canus |
| Mexican Chickadee | Poecile sclateri |
| Mexican Hermit | Phaethornis mexicanus |
| Mexican Jay | Aphelocoma wollweberi |
| Mexican Parrotlet | Forpus cyanopygius |
| Mexican Sheartail | Doricha eliza |
| Mexican Violetear | Colibri thalassinus |
| Mexican Whip-poor-will | Antrostomus arizonae |
| Mexican Woodnymph | Thalurania ridgwayi |
| Middendorff's Grasshopper-Warbler | Locustella ochotensis |
| Middle Spotted Woodpecker | Dendrocopos medius |
| Military Macaw | Ara militaris |
| Millerbird | Acrocephalus familiaris |
| Mississippi Kite | Ictinia mississippiensis |
| Mistle Thrush | Turdus viscivorus |
| Mitred Parakeet | Psittacara mitratus |
| Moltoni's Warbler | Sylvia subalpina |
| Monk Parakeet | Myiopsitta monachus |
| Montagu's Harrier | Circus pygargus |
| Montezuma Oropendola | Psarocolius montezuma |
| Montezuma Quail | Cyrtonyx montezumae |
| Montserrat Oriole | Icterus oberi |
| Mottled Duck | Anas fulvigula |
RingBase adheres to EURING codes.
