Avifauna
In the group of avifauna of the San Lucas National Park, a total of 40 species of birds are reported, of which 9 are migratory and 31 resident.
The resident species, magnificent frigatebird, pelecanus occidentalis, inca dove, and black volture are among the most abundant in the area.
While the species with a single record are: Gartered Trogon, Blue Gray Tanager, Great Crested Flycatcher, White Throated Magpie, Common Black Hawk, Eastern Kingbird, Ruddy Ground-Doveand Pacific Screech-Owl.
Non-flying land mammals
Within these species they stand out White-tailed deer, Squirrel, Nine-banded Long-Nosed Armadillo,Northern Raccoon,Northern Tamandua,Spotted Skunk,Collared Peccary, Mantled Howler Monkey.
It has been reported that the water the Howler Monkey need to live is obtained from the food they consume, from the rain and that they sometimes descend to the ground to drink directly (Neville et al. 1988).
Sources:
SINAC (National System of Conservation Areas of Costa Rica).
Legislative Assembly. Bill, creation of the National Park, Carlos Ricardo Benavides Jiménez, and other deputies, File No. 21. 287.