La Sagra's Flycatcher
Large-footed Finch
Laughing Falcon
Laughing Gull
Least Flycatcher
Least Grebe
Lemon-rumped Tanager
Lesser Ground Cuckoo
Lesser Kiskadee
Lesser Scaup
Lincoln's Sparrow
Lineated Woodpecker
Little Blue Heron
Loggerhead Kingbird
Long-billed Hermit
Long-tailed Silky-flycatcher
Long-tailed Tyrant