A Yellow-billed Tern was seen in a flock of a hundred Least Terns at El Agallito, Chitré. A Yellow-billed Tern was seen in a flock of a hundred Least Terns at El Agallito Beach, Chitré, on Sunday, April 19th, by Delicia, Darién and Camilo Montañez and Zeke Jakub, a young ornithologist from Massachusetts. The bird was observed for two to three minutes from a distance of about five meters. It was standing in the mud in front of the group, so it was easy to pick out among the other terns. Its bill was noticeably longer and stouter at the base than that of the Least Terns, and its color was brighter and slightly paler, with no hint of dark near the tip. Since it was standing right next to a hundred Least Terns these differences were even more striking. It had an all-black crown and nape, and the white on its forehead extended back over the eyes forming a thin supercilium, which was absent from the rest of the terns in the group, even those in full breeding plumage. It also seemed to be dar...