| Common Name | Scientific name |
|---|---|
| Lesser Spotted Woodpecker | Dendrocopos minor |
| Lesser Swallow-tailed Swift | Panyptila cayennensis |
| Lesser Violetear | Colibri cyanotus |
| Lesser White-fronted Goose | Anser erythropus |
| Lesser Whitethroat | Sylvia curruca |
| Lesser Yellow-headed Vulture | Cathartes burrovianus |
| Lesser Yellowlegs | Tringa flavipes |
| Lesson's Motmot | Momotus lessonii |
| Levant Sparrowhawk | Accipiter brevipes |
| Lewis's Woodpecker | Melanerpes lewis |
| Light-mantled Albatross | Phoebetria palpebrata |
| Light-vented Bulbul | Pycnonotus sinensis |
| Lilac-breasted Roller | Coracias caudatus |
| Lilac-crowned Parrot | Amazona finschi |
| Limpkin | Aramus guarauna |
| Lincoln's Sparrow | Melospiza lincolnii |
| Lineated Foliage-gleaner | Syndactyla subalaris |
| Lineated Woodpecker | Dryocopus lineatus |
| Lined Seedeater | Sporophila lineola |
| Little Bittern | Ixobrychus minutus |
| Little Blue Heron | Egretta caerulea |
| Little Bunting | Emberiza pusilla |
| Little Bustard | Tetrax tetrax |
| Little Crake | Porzana parva |
| Little Cuckoo | Coccycua minuta |
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