- Loriculus
- Loriculus amabilis
- Loriculus aurantiifrons
- Loriculus beryllinus
- Loriculus bonapartei
- Loriculus camiguinensis
- Loriculus catamene
- Loriculus exilis
- Loriculus flosculus
- Loriculus galgulus
- Loriculus philippensis
- Loriculus pusillus
- Loriculus sclateri
- Loriculus stigmatus
- Loriculus tener
- Loriculus vernalis
- Lorius
- Lorius albidinucha
- Lorius chlorocercus
- Lorius domicella
- Lorius garrulus
- Lorius hypoinochrous
- Lorius lory
- Lorius lory cyanuchen
- Lorius lory viridicrissalis
- Los Gemelos(Santa Cruz Island)
- Los Tarrales Reserve(Lake Atitlan)
- Lost Maples State Natural Area
- Loten's Sunbird
- Loudon Pond Community Nature Reserve
- Loudon Pond Community Nature Reserve (Douglas Water, South Lanarkshire)
- Lough Beg
- Lough Beg Northern Ireland
- Lough Foyle
- Lough Foyle RSPB Reserve Northern Ireland
- Lough Neagh Discovery Centre
- Louisiade Butcherbird
- Louisiade Flowerpecker
- Louisiade Pitta
- Louisiade Whistler
- Louisiade White-eye
- Louisiades Honeyeater
- Louisiades Meliphaga
- Louisiana
- Louisiana Waterthrush
- Louisiana heron
- Lovely Cotinga
- Lovely Fairywren
- Lovely Sunbird
- Loveridge's Sunbird
- Low Barns Nature Reserve, Witton-le-Wear
- Low Barns Nature Reserve, Witton-le-Wear, County Durham
- Lowan
- Lowe's Swiftlet
- Lower Bug River Landscape Park
- Lower Bug River Landscape Park (Mid-eastern Poland, close to Warsaw)
- Lower Bug River Valley
- Lower Bug River Valley(Mid-eastern Poland)
- Lower Klamath National Wildlife Refuge
- Lower Klamath National Wildlife Refuge(Tulelake)
- Lowland Akalat
- Lowland Eupetes
- Lowland Hepatic Tanager
- Lowland Jewel-babbler
- Lowland Jewel Babbler
- Lowland Masked Apalis
- Lowland Peltops
- Lowland Peltops-Flycatcher
- Lowland Rail-babbler
- Lowland Rail Babbler
- Lowland Robin
- Lowland Shieldbill
- Lowland Sooty Boubou
- Lowland Swiftlet
- Lowland Tiny Greenbul
- Lowland White-eye
- Loxahatchee NWR(SE Florida)
- Loxahatchee National Wildlife Refuge
- Loxia
- Loxia curvirostra
- Loxia curvirostra poliogyna
- Loxia leucoptera
- Loxia leucoptera bifasciata
- Loxia megaplaga
- Loxia pytyopsittacus
- Loxia scotica
- Loxia sinesciuris
- Loxigilla
- Loxigilla barbadensis
- Loxigilla noctis
- Loxigilla portoricensis
- Loxigilla violacea
- Loxioides
- Loxioides bailleui
- Loxipasser
- Loxipasser anoxanthus
- Loxops
- Loxops caeruleirostris
- Loxops coccineus
- Loxops mana
- Loxops wolstenholmei
- Luapula Cisticola
- Lubana Lake
- Lubana Lake and surrounding area Latvia
- Lucifer Hummingbird
- Lucifer Sheartail
- Lucy's Warbler
- Ludher's Bush Shrike
- Ludlow's Fulvetta
- Ludwig's Bustard
- Ludwig's Double-collared Sunbird
- Ludwig’s Double-collared Sunbird
- Luehder's Bush-Shrike
- Luehder's Bushshrike
- Lufira Masked-Weaver
- Lufira Masked Weaver
- Lullula
- Lullula arborea
- Lulu's Tody-Flycatcher
- Lulu's Tody-Tyrant
- Lulu's Tody Tyrant
- Lumbister
- Lumbister RSPB Reserve Shetland Islands, Scotland
- Lumbister Shetland Islands
- Lumix DMC FZ7
- Lundy Island
- Lundy Island England
- Luneburg Heath
- Luneburger Heide
- Lunulated Antbird
- Lurocalis
- Lurocalis nattereri
- Lurocalis rufiventris
- Lurocalis semitorquatus
- Luscinia
- Luscinia akahige
- Luscinia brunnea
- Luscinia calliope
- Luscinia cyane
- Luscinia cyanura
- Luscinia komadori
- Luscinia luscinia
- Luscinia megarhynchos
- Luscinia megarhynchos golzii
- Luscinia obscura
- Luscinia pectardens
- Luscinia pectoralis
- Luscinia pectoralis ballioni
- Luscinia phaenicuroides
- Luscinia phoenicuroides
- Luscinia ruficeps
- Luscinia rufilata
- Luscinia sibilans
- Luscinia svecica
- Luscinia svecica cyanecula
- Luscinia svecica namnetum
- Luxembourg
- Luxor
- Luxor Egypt
- Luzon Bleeding-heart
- Luzon Boobook
- Luzon Buttonquail
- Luzon Flameback
- Luzon Flowerpecker
- Luzon Hawk-Owl
- Luzon Hawk Owl
- Luzon Hornbill
- Luzon Jungle Flycatcher
- Luzon Racquet-tail
- Luzon Rail
- Luzon Redstart
- Luzon Scops-Owl
- Luzon Scops Owl
- Luzon Slender-billed Scops-Owl
- Luzon Slender-billed Scops Owl
- Luzon Striped-Babbler
- Luzon Striped Babbler
- Luzon Sunbird
- Luzon Tarictic Hornbill
- Luzon Water-Redstart
- Luzon Water Redstart
- Luzon White-eye
- Luzon Wren-Babbler
- Luzon Wren Babbler
- Lyall's Wren
- Lybiidae
- Lybius
- Lybius bidentatus
- Lybius bidentatus aequatorialis
- Lybius chaplini
- Lybius dubius
- Lybius guifsobalito
- Lybius leucocephalus
- Lybius leucocephalus albicauda
- Lybius leucocephalus senex
- Lybius melanopterus
- Lybius minor
- Lybius rolleti
- Lybius rubrifacies
- Lybius torquatus
- Lybius undatus
- Lybius vieilloti
- Lycocorax
- Lycocorax pyrrhopterus
- Lymnocryptes
- Lymnocryptes minimus
- Lyncornis
- Lyncornis macrotis
- Lyncornis temminckii
- Lynes's Cisticola
- Lyre-tailed Honeyguide
- Lyre-tailed Nightjar
- Lyrurus
- Lyrurus mlokosiewiczi
- Lyrurus tetrix
- Lyrurus tetrix tetrix
- Lysurus
- Lysurus castaneiceps
- Lysurus crassirostris
- Lühder's Bushshrike
- Lüneburg Heath
- Lüneburger Heide
- MK-10 Q ball
- Ma'agan Mikhael
- Ma'agan Mikhael Israel
- MacClounie's Robin-Chat
- MacClounie's Robin Chat
- MacConnell's Flycatcher
- MacConnell's Spinetail
- MacGillivray's Prion
- MacGillivray's Warbler
- MacGregor's Bowerbird
- MacGregor’s Bowerbird
- MacGregor’s Honeyeater
- Macaronesian Shearwater
- Macaroni Penguin
- Maccarese Pools
- Maccarese Pools, Lazio, Italy
- Maccoa Duck
- Macedonia
- Macgregor's Bird-of-Paradise
- Macgregor's Bird-of-paradise
- Macgregor's Bird of Paradise
- Macgregor's Bowerbird
- Macgregor's Gardenerbird
- Macgregor's Honeyeater
- Macgregoria
- Macgregoria pulchra
- Machaerirhynchidae
- Machaerirhynchus
- Machaerirhynchus flaviventer
- Machaerirhynchus nigripectus
- Machaeropterus
- Machaeropterus deliciosus
- Machaeropterus pyrocephalus
- Machaeropterus regulus
- Machaeropterus regulus regulus
- Machaeropterus regulus zulianus
- Machaeropterus striolatus
- Macheiramphus
- Macheiramphus alcinus
- Machetornis
- Machetornis rixosa
- Machetornis rixosus
- Machias Seal Island
- Machlolophus
- Machlolophus aplonotus
- Machlolophus holsti
- Machlolophus nuchalis
- Machlolophus spilonotus
- Machlolophus xanthogenys
- Macholophus holsti
- Mackenziaena
- Mackenziaena leachii
- Mackenziaena severa
- Mackinder's Eagle-Owl
- Mackinder's Eagle Owl
- Mackinlay's Cuckoo-Dove
- Mackinlay's Cuckoo Dove
- Mackinnon's Shrike
- Macklot's Pitta
- Macklot's Sunbird
- Macleay's Honeyeater
- Macleay Honeyeater
- Macloud Bowerbird
- Macquarie Shag
- Macqueen's Bustard
- Macqueen's Courser
- Macroagelaius
- Macroagelaius imthurni
- Macroagelaius subalaris
- Macrocephalon
- Macrocephalon maleo
- Macrodipteryx
- Macrodipteryx longipennis
- Macrodipteryx vexillarius
- Macroglossum stellatarum
- Macronectes
- Macronectes giganteus
- Macronectes giganteus & M. halli
- Macronectes halli
- Macronous
- Macronous bornensis
- Macronous erythroptera
- Macronous flavicollis
- Macronous gularis
- Macronous kelleyi
- Macronous maculata
- Macronous melanothorax
- Macronous ptilosus
- Macronous striaticeps
- Macronus
- Macronus bornensis
- Macronus erythroptera
- Macronus flavicollis
- Macronus gularis
- Macronus kelleyi
- Macronus maculata
- Macronus melanothorax
- Macronus ptilosus
- Macronus striaticeps
- Macronyx
- Macronyx ameliae
- Macronyx ameliae wintoni
- Macronyx aurantiigula
- Macronyx capensis
- Macronyx capensis capensis
- Macronyx croceus
- Macronyx flavicollis
- Macronyx fuelleborni
- Macronyx fuellebornii
- Macronyx grimwoodi
- Macronyx sharpei
- Macropsalis
- Macropsalis forcipata
- Macropygia
- Macropygia amboinensis
- Macropygia cinnamomea
- Macropygia doreya
- Macropygia emiliana
- Macropygia macassariensis
- Macropygia mackinlayi
- Macropygia magna
- Macropygia magna timorlaoensis
- Macropygia modiglianii


