- Laced Woodpecker
- Lacrimose Mountain Tanager
- Lance-tailed Manakin
- Lanner Falcon
- Lapland Longspur
- Lappet-faced Vulture
- Large-billed Crow
- Large-billed Lark
- Large-tailed Nightjar
- Large Cuckooshrike
- Large Niltava
- Large Scimitar Babbler
- Lark-like Bunting
- Laughing Dove
- Laughing Falcon
- Lavender Waxbill
- Layard's Warbler
- Lazuline Sabrewing
- Least Flycatcher
- Least Sandpiper
- Lemon Dove
- Lesser Black-backed Gull
- Lesser Black-backed Gull (graellsii)
- Lesser Crested Tern
- Lesser Flamingo
- Lesser Goldfinch
- Lesser Greenlet
- Lesser Honeyguide
- Lesser Jacana
- Lesser Kestrel
- Lesser Masked Weaver
- Lesser Necklaced Laughingthrush
- Lesser Racket-tailed Drongo
- Lesser Redpoll
- Lesser Scaup
- Lesser Spotted Woodpecker
- Lesser Striped Swallow
- Lesser Swamp Warbler
- Lesser Violetear
- Lesser Whistling Duck
- Lesser Whitethroat
- Lesser Yellowlegs
- Lesson's Motmot
- Levaillant's Cisticola
- Levaillant's Cuckoo
- Lichtenstein's Sandgrouse
- Lilac-breasted Roller
- Lincoln's Sparrow
- Lineated Barbet
- Lineated Woodpecker
- Little Bee-eater
- Little Bittern
- Little Blue Heron
- Little Bunting
- Little Bustard
- Little Cormorant
- Little Crake
- Little Cuckoo-Dove
- Little Egret
- Little Grebe
- Little Greenbul
- Little Gull
- Little Owl
- Little Pied Flycatcher
- Little Ringed Plover
- Little Rock Thrush
- Little Spiderhunter
- Little Stint
- Little Swift
- Little Tern
- Little Weaver
- Lizard Buzzard
- Long-billed Crombec
- Long-billed Hermit
- Long-billed Pipit
- Long-crested Eagle
- Long-eared Owl
- Long-legged Buzzard
- Long-tailed Duck
- Long-tailed Glossy Starling
- Long-tailed Jaeger
- Long-tailed Paradise Whydah
- Long-tailed Shrike
- Long-tailed Sibia
- Long-tailed Silky-flycatcher
- Long-tailed Sylph
- Long-tailed Tit
- Long-tailed Tyrant
- Long-tailed Widowbird
- Long-toed Lapwing
- Long-toed Stint