- Least Bittern
- Least Sandpiper
- Lesser Antillean Bullfinch
- Lesser Antillean Saltator
- Lesser Black-backed Gull
- Lesser Redpoll
- Lesser Spotted Woodpecker
- Lesser Yellowlegs
- Little Bittern
- Little Blue Heron
- Little Bustard
- Little Egret
- Little Grebe
- Little Gull
- Little Ringed Plover
- Little Stint
- Long-tailed Duck
- Long-tailed Tit