Roseate tern and the bill black. Juvenile roseate terns have a scaly appearance like juvenile Sandwich Terns, but a fuller black cap than that species. This species breeds in colonies on coasts and islands, at times with other seabirds. In Australian territory, it has been recorded nesting alongside the black-naped tern ("S. sumatrana"), lesser crested tern ("Thalasseus bengalensis"), crested tern ("T. bergii"), fairy tern ("Sternula nereis"), bridled tern ("Onychoprion anaethetus") and silver gull ("Chroicocephalus novaehollandiae"). It nests in a ground scrape, often in a hollow or under dense vegetation, and lays one or two (rarely three) eggs. It is less defensive of
Peruvian tern years, they are also absent from the shore, do not make any attempt to breed and probably remain at sea. The total number of Peruvian terns is estimated to be in the range 1,000 to 2,499 individuals. The number seems to be declining, and in 2007 it was suggested that there were only half as many birds as there had been ten years earlier. Because of the small population size and the decrease in numbers of individuals, BirdLife International has assessed the bird's conservation status as being "endangered". Peruvian tern The Peruvian tern ("Sternula lorata") is a species of tern