- Laced Woodpecker
- Lapland Longspur
- Lark Sparrow
- Laughing Dove
- Laughing Falcon
- Laughing Gull
- Least Bittern
- Least Flycatcher
- Least Sandpiper
- Least Tern
- Lesser Black-backed Gull
- Lesser Crested Tern
- Lesser Goldfinch
- Lesser Kestrel
- Lesser Racket-tailed Drongo
- Lesser Sand Plover
- Lesser Scaup
- Lesser Short-toed Lark
- Lesser Spotted Woodpecker
- Lesser Whistling Duck
- Lesser Yellowlegs
- Limpkin
- Lincoln's Sparrow
- Lineated Barbet
- Lineated Woodpecker
- Little Bittern
- Little Blue Heron
- Little Bustard
- Little Cormorant
- Little Crake
- Little Cuckoo-Dove
- Little Egret
- Little Grebe
- Little Gull
- Little Owl
- Little Pied Flycatcher
- Little Ringed Plover
- Little Spiderhunter
- Little Stint
- Little Tern
- Little Woodpecker
- Loggerhead Shrike
- Long-legged Buzzard
- Long-tailed Duck
- Long-tailed Jaeger
- Long-tailed Sibia
- Long-tailed Tit
- Long-toed Stint