- Ladder-tailed Nightjar
- Large-billed Antwren
- Large-billed Tern
- Laughing Dove
- Laughing Falcon
- Laughing Gull
- Least Grebe
- Least Sandpiper
- Least Tern
- Lesser Antillean Bullfinch
- Lesser Kiskadee
- Lesser Nighthawk
- Lesser Spotted Woodpecker
- Lesser Striped Swallow
- Lesser Yellow-headed Vulture
- Lesser Yellowlegs
- Lilac-tailed Parrotlet
- Lineated Woodpecker
- Lined Forest Falcon
- Lined Seedeater
- Little Bee-eater
- Little Blue Heron
- Little Chachalaca
- Little Cuckoo
- Little Egret
- Little Grebe
- Little Hermit
- Little Woodpecker
- Long-legged Pipit
- Long-tailed Hermit
- Long-tailed Tit
- Long-tailed Tyrant
- Long-winged Antwren
- Long-winged Harrier