Proposal (760) to South American Classification Committee



Add Chlidonias hybrida (Whiskered Tern) to the Main List



Effect on South American CL: This would add a species to the Main List.


Background: The species has been recently recorded for the first time in Paraguay which also represents the first record for South America:

An adult Whiskered Tern was photographed and observed on 14 January 2016 by R.P.C., Holly Faithfull and Lloyd Stetson (Fig. 1G) at Estancia La Graciela, Misiones dept. Paraguay. The picture and notes clearly match Chlidonias hybrida.


Recommendation: I would recommend a yes vote to add this species to the South American checklist.


Literature Cited:

R. P. Clay, A. J. Lesterhuis & P. Smith Status and distribution of the suborder Lari in Paraguay, including new country records.  Revista Brasileira de Ornitologia 25(2): 128–136.



Dan Zimberlin, November 2017


Note from Remsen: Here is a screen shot of the photo:




Comments from Areta: "YES. I concur with the identification of the bird in the picture as C. hybrida."


Comments from Stiles: "YES, the photos clearly represent C. hybrida."


Comments from Zimmer: “YES.  Photos appear definitive in confirming this identification.”


Comments from Remsen: “YES.  Published photo is sufficient evidence for occurrence in SACC area.”


Comments from Pacheco: “YES.  Meeting the requirements of SACC.”


Comments from Stotz: “YES.  Photo recognizable as Chlidonias hybrida.”


Comments from Jaramillo: “YES: ID clear cut from the information provided.”