- Lacrimose Mountain Tanager
- Lanner Falcon
- Laughing Dove
- Laughing Falcon
- Lava Gull
- Lava Heron
- Least Sandpiper
- Lesser Antillean Bullfinch
- Lesser Crested Tern
- Lesser Goldfinch
- Lesser Masked Weaver
- Lesser Spotted Eagle
- Lesser Spotted Woodpecker
- Lesser Striped Swallow
- Lesser Violetear
- Lesser Whistling Duck
- Lesser Yellowlegs
- Lilac-breasted Roller
- Limpkin
- Lineated Woodpecker
- Little Bee-eater
- Little Blue Heron
- Little Corella
- Little Egret
- Little Grebe
- Little Gull
- Little Owl
- Little Penguin
- Little Pied Cormorant
- Little Ringed Plover
- Little Stint
- Long-crested Eagle
- Long-tailed Sylph
- Long-tailed Tit