- La Sagra's Flycatcher
- Lanner Falcon
- Lappet-faced Vulture
- Large-billed Crow
- Large-billed Leaf Warbler
- Large-footed Finch
- Large Rock Martin
- Lattice-tailed Trogon
- Laughing Dove
- Laughing Falcon
- Laughing Gull
- Lavender Waxbill
- Layard's Parakeet
- Least Grebe
- Least Sandpiper
- Legge's Flowerpecker
- Lesser Black-backed Gull
- Lesser Black-backed Gull (heuglini)
- Lesser Blue-eared Starling
- Lesser Crested Tern
- Lesser Flamingo
- Lesser Greenlet
- Lesser Grey Shrike
- Lesser Honeyguide
- Lesser Jacana
- Lesser Kestrel
- Lesser Masked Weaver
- Lesser Moorhen
- Lesser Nighthawk
- Lesser Spotted Woodpecker
- Lesser Striped Swallow
- Lesser Swamp Warbler
- Lesser Whistling Duck
- Lesser White-fronted Goose
- Lesser Whitethroat
- Lesser Yellow-headed Vulture
- Lesser Yellowlegs
- Lesser Yellownape
- Lesson's Motmot
- Levaillant's Cuckoo
- Levaillant's Woodpecker
- Levant Sparrowhawk
- Lichtenstein's Sandgrouse
- Lilac-breasted Roller
- Limpkin
- Lineated Woodpecker
- Little Bee-eater
- Little Bittern
- Little Blue Heron
- Little Bunting
- Little Bustard
- Little Cormorant
- Little Crake
- Little Egret
- Little Grebe
- Little Greenbul
- Little Gull
- Little Owl
- Little Ringed Plover
- Little Rock Thrush
- Little Rush Warbler
- Little Sparrowhawk
- Little Spotted Woodpecker
- Little Stint
- Little Swift
- Little Tern
- Little Weaver
- Little Yellow Flycatcher
- Lizard Buzzard
- Loggerhead Kingbird
- Long-billed Crombec
- Long-billed Pipit
- Long-billed Starthroat
- Long-crested Eagle
- Long-eared Owl
- Long-legged Buzzard
- Long-tailed Cisticola
- Long-tailed Duck
- Long-tailed Fiscal
- Long-tailed Glossy Starling
- Long-tailed Manakin
- Long-tailed Meadowlark
- Long-tailed Paradise Whydah
- Long-tailed Silky-flycatcher
- Long-tailed Tit
- Long-tailed Tyrant
- Long-tailed Widowbird
- Long-toed Lapwing
- Loten's Sunbird
- Louisiana Waterthrush
- Lowland Tiny Greenbul
- Lühder's Bushshrike
- Lynes's Cisticola