APPENDIX 



633 



[STERNA SUPERCILIARIS Vieillot: Yellow-billed Tern, 

 Gaviotin Piquiamarillo 



Sterna superciliaris Vieillot, 1819, Nouv. Diet. Hist. Nat., 32, p. 176. (Paraguay, 

 ex Azara, no. 415.) 



This species is known in Panama from a single record; on October 

 20, 1977, J. Pujals photographed 1 that was with Least Terns (S. albi- 

 frons) at Coco Solo, Canal Zone (Ridgely, in litt.). The Yellow- 

 billed Tern is usually found on the rivers of South America east of the 

 Andes from Colombia, Venezuela, and the Guianas to Paraguay, east- 

 ern Argentina, and Uruguay.] 



[THALASSEUS ELEGANS (Gambel): Elegant Tern, 

 Gaviotin Elegante 



Sterna elegans Gambel, 1848 (1849), Proc. Acad. Nat. Sci. Philadelphia, 4, p. 129. 

 (Mazatlan, Sinaloa, Mexico.) 



This species is a rare transient and visitant to the Pacific Coast and 

 offshore waters, but no specimens have been collected. The sight re- 

 ports are as follows: 2 believed seen in the Gulf of Panama south of 

 the Pearl Islands (Rey) by R. C. Murphy on September 8, 1937; 1 

 photographed in flight at Fort Amador, Canal Zone, on January 23, 

 1969, by Ridgely; a group of 55 seen at the Aguadulce Salinas, Code, 

 on June 26, 1971, by Eisenmann and J. Pujals; 1 seen among a group 

 of Sandwich Terns (T. sandvicensis) at Panama City on February 7, 

 1973; and 12 seen on rocks with 2 Royal Terns (T. maximus) on the 

 coast south of Aguadulce on January 6, 1974, by G. Stiles and Ridgely 

 (Ridgely, 1976, p. 116) . The Elegant Tern breeds on the west coast of 

 extreme southern California, Baja California, and islands in the Gulf 

 of California, and winters on the coast from Ecuador to central Chile; 

 nonbreeders remain on the South American coast throughout the year.] 



Family COLUMBIDAE: Pigeons and Doves; Palomas y Tortolitas 



[COLUMBA GOODSONI Hartert: Dusky Pigeon, Paloma Negruzca 



Columba goodsoni Hartert, 1902, Bull. Brit. Orn. CI., 12, p. 42. (San Javier, 

 Pambilar, and Carondelet, northwestern Ecuador; the type is from Pambilar.) 



On March 7, 1981, V. Emanuel and Ridgely (in litt.) heard 2 birds 

 of this species calling along the trail between Baizal, on the Rio Tuira, 

 and Pucuro, on the Rio Pucuro ( = Pucro), Darien. One of these was 

 examined closely after it responded to a tape playback. The birds were 



