- Laughing Dove
- Laughing Gull
- Laughing Kookaburra
- Least Sandpiper
- Least Tern
- Lesser Antillean Bullfinch
- Lesser Antillean Saltator
- Lesser Black-backed Gull
- Lesser Flamingo
- Lesser Grey Shrike
- Lesser Jacana
- Lesser Kestrel
- Lesser Masked Weaver
- Lesser Striped Swallow
- Lesser Swamp Warbler
- Lesser Yellowlegs
- Levaillant's Cuckoo
- Lilac-breasted Roller
- Little Bee-eater
- Little Blue Heron
- Little Egret
- Little Owl
- Little Pied Cormorant
- Little Ringed Plover
- Little Tern
- Lizard Buzzard
- Long-crested Eagle
- Long-tailed Duck
- Long-tailed Tit
- Long-toed Lapwing
- Lühder's Bushshrike