- Lappet-faced Vulture
- Large-billed Tern
- Laughing Falcon
- Laughing Gull
- Leach's Storm Petrel
- Lemon-chested Greenlet
- Lesser Antillean Bullfinch
- Lesser Flamingo
- Lesser Nighthawk
- Lesser Yellow-headed Vulture
- Lilac-breasted Roller
- Lineated Woodpecker
- Little Bee-eater
- Little Blue Heron
- Little Chachalaca
- Little Cuckoo
- Little Egret
- Little Woodpecker
- Long-billed Woodcreeper
- Long-tailed Hermit
- Long-winged Harrier