- Lady Amherst's Pheasant
- Large-billed Tern
- Large Rock Martin
- Laughing Dove
- Laughing Gull
- Lavender Waxbill
- Leach's Storm Petrel
- Least Sandpiper
- Lesser Adjutant
- Lesser Antillean Bullfinch
- Lesser Antillean Flycatcher
- Lesser Antillean Saltator
- Lesser Black-backed Gull
- Lesser Black-backed Gull (graellsii)
- Lesser Black-backed Gull (heuglini)
- Lesser Crested Tern
- Lesser Flamingo
- Lesser Frigatebird
- Lesser Masked Weaver
- Lesser Nighthawk
- Lesser Noddy
- Lesser Spotted Woodpecker
- Lesser Vasa Parrot
- Lesser Whistling Duck
- Lesser Whitethroat
- Lesser Yellow-headed Vulture
- Lesser Yellowlegs
- Lilac-breasted Roller
- Limpkin
- Little Bee-eater
- Little Bittern
- Little Blue Heron
- Little Cormorant
- Little Egret
- Little Grebe
- Little Owl
- Little Ringed Plover
- Little Stint
- Little Tern
- Lizard Buzzard
- Loggerhead Kingbird
- Loggerhead Shrike
- Long-billed Dowitcher
- Long-eared Owl
- Long-tailed Glossy Starling
- Long-tailed Mockingbird
- Long-tailed Shrike
- Long-tailed Tit
- Long-toed Lapwing
- Long-toed Stint
- Loten's Sunbird