GRAY-BREASTED TREE DUCK 



DENDROCYGNA DISCOLOR Sclater and Salvin 

 (Plate 11) 



Synonymy 

 Anas autumnalis Jacquin {nee Linne), Beytrage, vol. 1, p. 6, 1784. 

 Dendrocygna autumnalis G. R. Gray, List Spec. Birds Brit. Mus., pt. 3, p. 131, 1844. 

 Dendrocygna discolor Sclater and Salvin, Nomenclat. Avium Neotrop., p. 129, 1873. 

 Dendrocygna autumnalis discolor Baird, Brewer and Ridgway, Water-birds of No. 

 Amer., vol. 1, p. 480, 1884. 



Veenacular Names 

 English: Portuguese: 



Colombian Tree Duck Marreca cabocla 



Southern Red-billed Tree Duck Marreca grande de Marajo 



Gray -necked Tree Duck Dutch' 



Gray-breasted Tree Duck Columbiaansche Boomende 



Two-color Tree Duck 

 Vicissi Duck, or Visi-visi. 



French: 



Siffleur de Cayenne 

 Siffleur a bee rouge 



Spanish: 

 Pisesic 



Trinidad: 



Ouikiki ailes blanches 



Venezuela: 

 Giiiriri 



DESCRIPTION 



Adult Male and Female: Differ from Dendrocygna autumnalis only in the mantle being gray, and 

 sharply contrasted against the brown scapulars, and also in having the breast gray, especially at the 

 lower margin; thus differing markedly from the chestnut breast of the northern species. Size smaller 

 than Dendrocygna autumnalis. 



Wing 230 mm.; bill 48; tarsus 55. 



Note: This species may intergrade with Dendrocygna autumnalis. A specimen of the latter from 

 Panama (M.C.Z. no. 7731), is not quite true to type and is small, but is certainly more like autum- 

 nalis than like discolor. 



DISTRIBUTION 



The present species, which is the South American form of Dendrocygna autumnalis, is found in north- 

 ern and eastern South America and in a few islands of the Lesser Antilles. It is a resident species and 

 is not known to migrate to any extent. The northernmost record is perhaps that for Divala, Panama 

 (Bangs, 1901). According to F. M. Chapman (1917) the record for the Truando River, Colombia, 

 which is usually given as the southern limit of Dendrocygna autumnalis, really belongs to the present 

 species. In Colombia it has also been found at Sipi (Hellmayr, 1911) and at Cali (F. M. Chapman, 



