- Merops bullockoides bullockoides
- Merops bulocki
- Merops cyanophrys
- Merops gularis
- Merops hirundineus
- Merops lafresnayii
- Merops leschenaulti
- Merops malimbicus
- Merops mentalis
- Merops muelleri
- Merops nubicoides
- Merops nubicus
- Merops oreobates
- Merops orientalis
- Merops orientalis beludschicus
- Merops orientalis cyanophrys
- Merops orientalis ferrugeiceps
- Merops ornatus
- Merops persicus
- Merops philippinus
- Merops pusillus
- Merops revoilii
- Merops superciliosus
- Merops supercilious
- Merops variegatus
- Merops variegatus lafresnayii
- Merops variegatus loringi
- Merops viridis
- Merops viridis americanus
- Merrill's Fruit-Dove
- Merrill's Fruit-dove
- Merrill's Fruit Dove
- Merritt Island National Wildlife Refuge
- Merritt Island National Wildlife Refuge Florida
- Mersehead Nature Reserve
- Merseyside
- Merulaxis
- Merulaxis ater
- Merulaxis stresemanni
- Mesembrinibis
- Mesembrinibis cayennensis
- Mesia argentauris
- Mesite
- Mesites
- Mesitornis
- Mesitornis unicolor
- Mesitornis variegata
- Mesitornithidae
- Mesitornithiformes
- Mesophoyx intermedia
- Mesopotamian Crow
- Metabolus
- Metabolus rugensis
- Metallic-green Tanager
- Metallic-winged Sunbird
- Metallic Dove
- Metallic Pigeon
- Metallic Starling
- Metallura
- Metallura aeneocauda
- Metallura baroni
- Metallura eupogon
- Metallura iracunda
- Metallura odomae
- Metallura phoebe
- Metallura theresiae
- Metallura tyrianthina
- Metallura williami
- Metallura williami williami
- Metcalfe's White-eye
- Meteliai Regional Park
- Meteliai regional park(Lithuania)
- Metopidius
- Metopidius indicus
- Metopothrix
- Metopothrix aurantiaca
- Metopothrix aurantiacus
- Metriopelia
- Metriopelia aymara
- Metriopelia ceciliae
- Metriopelia melanoptera
- Metriopelia morenoi
- Metropolitan Natural Park
- Metropolitan Natural Park(Panama City)
- Meves's Glossy-Starling
- Meves's Glossy Starling
- Meves's Long-tailed Starling
- Meves's Starling
- Mew Gull
- Mewing Kingfisher
- Mexican Antthrush
- Mexican Barred Owl
- Mexican Cacique
- Mexican Cave Swallow
- Mexican Chickadee
- Mexican Crow
- Mexican Duck
- Mexican Emerald Toucanet
- Mexican Hermit
- Mexican Jay
- Mexican Parrotlet
- Mexican Rail
- Mexican Sheartail
- Mexican Violetear
- Mexican Whip-poor-will
- Mexican Woodnymph
- Mexican Yellow Grosbeak
- Mexico
- Mexico State
- Meyer's Bronze-Cuckoo
- Meyer's Bronze Cuckoo
- Meyer's Friarbird
- Meyer's Goshawk
- Meyer's Honeyeater
- Meyer's Parrot
- Meyer's Sickle-billed Bird-of-paradise
- Meyer's Sicklebill
- Meyer's Whistler
- Meyer’s Bronze Cuckoo
- Miami and Everglades National Park Florida
- Miccosukee Canopy Road Greenway
- Miccosukee Canopy Road Greenway(Tallahassee, Leon County)
- Michaelmas Cay
- Michigan
- Michler's Antpitta
- Michoacán
- Micrastur
- Micrastur buckleyi
- Micrastur gilvicollis
- Micrastur mintoni
- Micrastur mirandollei
- Micrastur plumbeus
- Micrastur ruficollis
- Micrastur semitorquatus
- Micrathene
- Micrathene whitneyi
- Microbates
- Microbates cinereiventris
- Microbates collaris
- Microcarbo
- Microcarbo africanus
- Microcarbo africanus africanus
- Microcarbo coronatus
- Microcarbo melanoleucos
- Microcarbo melanoleucos brevirostris
- Microcarbo niger
- Microcarbo pygmaeus
- Microcarbo pygmeus
- Microcerculus
- Microcerculus bambla
- Microcerculus marginatus
- Microcerculus philomela
- Microcerculus ustulatus
- Microchera
- Microchera albocoronata
- Microdynamis
- Microdynamis parva
- Microeca
- Microeca fascinans
- Microeca fascinans. Rhipidura leucophrys
- Microeca flavigaster
- Microeca flaviventris
- Microeca flavovirescens
- Microeca griseoceps
- Microeca hemixantha
- Microeca papuana
- Microgoura
- Microgoura meeki
- Microhierax
- Microhierax caerulescens
- Microhierax erythrogenys
- Microhierax fringillarius
- Microhierax latifrons
- Microhierax melanoleucos
- Microligea
- Microligea palustris
- Micromacronus
- Micromacronus leytensis
- Micromacronus sordidus
- Micromonacha
- Micromonacha lanceolata
- Micronesia
- Micronesian Broadbill
- Micronesian Imperial-Pigeon
- Micronesian Imperial Pigeon
- Micronesian Kingfisher
- Micronesian Megapode
- Micronesian Myzomela
- Micronesian Scrubfowl
- Micronesian Starling
- Micronesian Swiftlet
- Micronisus
- Micronisus gabar
- Microparra
- Microparra capensis
- Micropsitta
- Micropsitta bruijnii
- Micropsitta finschii
- Micropsitta geelvinkiana
- Micropsitta geelvinkiana geelvinkiana
- Micropsitta geelvinkiana misoriensis
- Micropsitta keiensis
- Micropsitta meeki
- Micropsitta pusio
- Micropternus
- Micropternus brachyurus
- Micropternus brachyurus humei
- Micropygia
- Micropygia schomburgkii
- Microrhopias
- Microrhopias quixensis
- Microspingus cabanisi
- Microspingus cinereus
- Microstage 6030 Digital Camera Adapter
- Microstilbon
- Microstilbon burmeisteri
- Microtarsus melanoleucos
- Microxenops
- Microxenops milleri
- Mid-mountain Berrypecker
- Mid-mountain Eupetes
- Mid-mountain Jewel-babbler
- Mid-mountain Jewel Babbler
- Mid-mountain Rail-babbler
- Mid-mountain Rail Babbler
- Middendorf's Warbler
- Middendorff's Goose
- Middendorff's Grasshopper-Warbler
- Middendorff's Grasshopper Warbler
- Middendorff's Warbler
- Middle American Screech-Owl
- Middle American Screech Owl
- Middle Creek WMA(Pennsylvania)
- Middle Creek Wildlife Management Area
- Middle East
- Middle Spotted Woodpecker
- Midget Flowerpecker
- Midget Myzomela
- Midmar
- Mighty Midget 2
- Migration
- Mikado Pheasant
- Mikri Prespa National Park
- Mikri Prespa National Park Greece
- Mila 23(Danube Delta)
- Mila 23 (Danube Delta)
- Miliaria calandra
- Milicz Fishponds and the Barycz Valley
- Milicz Fishponds and the Barycz Valley Poland
- Military Macaw
- Milky Stork
- Millerbird
- Milpe Bird Sanctuary
- Milvago
- Milvago Chimango
- Milvago chimachima
- Milvago chimachima cordata
- Milvago chimachima cordatus
- Milvago chimango
- Milvago chimango chimango
- Milvago chimango temucoensis
- Milvus
- Milvus aegyptius
- Milvus fasciicauda
- Milvus lineatus
- Milvus migrans
- Milvus migrans aegyptius
- Milvus migrans affinis
- Milvus migrans govinda
- Milvus migrans lineatus
- Milvus migrans parasitus
- Milvus milvus
- Mimetic Honeyeater
- Mimic Honeyeater
- Mimic Meliphaga
- Mimidae
- Mimizuku
- Mimizuku gurneyi
- Mimocichla plumbea
- Mimodes
- Mimodes graysoni
- Mimus
- Mimus dorsalis
- Mimus gilvus
- Mimus gilvus leucophaeus
- Mimus gundlachii
- Mimus longicaudatus
- Mimus macdonaldi
- Mimus melanotis
- Mimus parvulus
- Mimus patagonicus
- Mimus polyglottos
- Mimus saturninus
- Mimus thenca
- Mimus trifasciatus
- Mimus triurus
- Minahassa Barn Owl
- Minahassa Masked-Owl
- Minahassa Masked Owl
- Minahassa Owl
- Minas Gerais Tyrannulet
- Mindanao Bleeding-heart
- Mindanao Blue-Fantail
- Mindanao Blue Fantail
- Mindanao Boobook
- Mindanao Brown-Dove
- Mindanao Brown Dove
- Mindanao Eagle-Owl
- Mindanao Eagle Owl
- Mindanao Ground-Babbler
- Mindanao Ground Babbler
- Mindanao Hawk-Owl
- Mindanao Hawk Owl
- Mindanao Hornbill
- Mindanao Ibon
- Mindanao Jungle-Flycatcher
- Mindanao Jungle Flycatcher
- Mindanao Lorikeet
- Mindanao Miniature Babbler
- Mindanao Miniature Tit-Babbler
- Mindanao Miniature Tit Babbler
- Mindanao Montane Racquet-tail
- Mindanao Parrotfinch
- Mindanao Plumed-Warbler
- Mindanao Plumed Warbler
- Mindanao Pygmy-Babbler
- Mindanao Pygmy Babbler
- Mindanao Racket-tail
- Mindanao Racquet-tail
- Mindanao Scops-Owl
- Mindanao Scops Owl
- Mindanao Tarictic Hornbill
- Mindanao Wattled Broadbill
- Mindanao White-eye
- Mindanao Wrinkled Hornbill
- Mindoro Bleeding-heart
- Mindoro Boobook
- Mindoro Bulbul
- Mindoro Hawk-Owl
- Mindoro Hawk Owl
- Mindoro Hornbill
- Mindoro Imperial-Pigeon
- Mindoro Imperial Pigeon
- Mindoro Racket-tail
- Mindoro Racquet-tail


