There are 18 species of birds as well as numerous insects, lizards, crabs, and snails that may be observed within the park. The Mariana Moorhen and Mariana Nightingale Reed Warbler are federally protected by the Endangered Species Act.
Common Sandpiper, Chamorro: Dulili, Carolinian: Ghuliing Scientific name: Actitis hypoleucos
Eurasian Tree Sparrows, Chamorro: Ga'ga pale' Scientific name: Passer montanus
Golden White Eye, Chamorro: Canario, Carolinian: Ghanooriyo Scientific name: Cleptornis marchei