The Puerto Rican Spindalis are usually found in pairs but may travel in small flocks. These birdsalso engage in a behavior called mobbing. This is when a flock of birds, from one or more
species, attack a known predator, usually to defend their eggs or hatchlings. Such behavior
has been observed being directed against the Puerto Rican Boa by immature Puerto Rican
Spindalis. The Puerto Rican Spindalis exhibits sexual dimorphism with males being brightly
colored and females being dully colored. Males are green colored above with an orange neck
and chest. They have a black head with two white stripes running across it, with one above
and one below the eyes. The tail and wings are gray to black with small white stripes at the
tips. In contrast, the female is a dull olive-green color with slightly noticeable white stripes. It
is widely distributed throughout the island and is an important part of the Puerto Rican
ecosystem because of its help in seed dispersal and plant reproduction. The Puerto Rican
Spindalis is also the national of the United States Commonwealth of Puerto Rico.
