Least Tern (Sternula antillarum) August 3, 2020 1500 × 1072 Least Tern (Sternula antillarum) Least Tern (Sternula antillarum) pair, May 2019, Montauk. Breeder. DECLINING. Late May, 2019. Montauk, New York. Breeder. DECLINING.