- Lacrimose Mountain Tanager
- Ladder-tailed Nightjar
- Lance-tailed Manakin
- Lanner Falcon
- Large-billed Crow
- Large-billed Tern
- Laughing Dove
- Laughing Falcon
- Lavender Waxbill
- Least Grebe
- Least Sandpiper
- Lemon-rumped Tanager
- Lesser Adjutant
- Lesser Bird-of-paradise
- Lesser Black-backed Gull
- Lesser Black-backed Gull (heuglini)
- Lesser Blue-eared Starling
- Lesser Crested Tern
- Lesser Elaenia
- Lesser Flamingo
- Lesser Frigatebird
- Lesser Goldfinch
- Lesser Kestrel
- Lesser Kiskadee
- Lesser Scaup
- Lesser Spotted Woodpecker
- Lesser Violetear
- Lesser Whistling Duck
- Lesser Whitethroat
- Lesser Yellowlegs
- Levaillant's Woodpecker
- Lichtenstein's Sandgrouse
- Limpkin
- Lineated Woodpecker
- Little Bee-eater
- Little Blue Heron
- Little Crake
- Little Egret
- Little Grebe
- Little Nightjar
- Little Owl
- Little Ringed Plover
- Little Stint
- Little Weaver
- Little Woodpecker
- Long-billed Curlew
- Long-billed Hermit
- Long-billed Pipit
- Long-billed Starthroat
- Long-billed Woodcreeper
- Long-legged Buzzard
- Long-tailed Duck
- Long-tailed Glossy Starling
- Long-tailed Ground Dove
- Long-tailed Honey Buzzard
- Long-tailed Mockingbird
- Long-tailed Nightjar
- Long-tailed Silky-flycatcher
- Long-tailed Starling
- Long-tailed Sylph
- Long-tailed Tit
- Long-tailed Tyrant
- Long-winged Harrier
- Lowland Peltops
- Lyre-tailed Nightjar