There are at least 10 different species of terns [Sternidae family] on Aruba. These species are as follows.
One, Bridled Tern [Onychoprion anaethetus].
Two, Black Noddy Tern [Anous minutus].
Three, Brown Noddy, or Common Noddy, Tern [Anous stolidus].
Four, Cayenne Tern [Sterna sandvicensis eurygnatha].
Five, Common Tern [Sterna hirundo].
Six, Least Tern [Sternula antillarum; formerly Sterna antillarum].
Seven, Roseate Tern [Sterna dougallii].
Eight, Royal Tern [Thalasseus maximus, synonym: Sterna maxima].
Nine, Sandwich Tern [Thalasseus sandvicensis; formerly Sterna sandvicensis].
Ten, Sooty Tern [Onychoprion fuscatus; formerly Sterna fuscata].
For photos of Cayenne Terns and chicks on Aruba, please visit the link provided below.