SOUTHEASTERN CARIBBEAN BIRDS
PHOTO GALLERY
Trinidad & Tobago Field Naturalists' Club    Southeastern Caribbean Bird Alert    Trinidad & Tobago Rare Bird Committee

IDENTIFICATION ESSAY

Sandwich Tern (Sterna sandvicensis acuflavida) and Cayenne Tern (S. s. eurygnatha): Page 7 of 7
    
Page 1: Virgin Islands (variation)
    
Page 2: Virgin Islands (hybridisation)
    
Page 3: Aruba (hybridisation)
    
Page 4: Tobago
    
Page 5: Brazil
    
Page 6: Argentina
     Page 7: Argentina


The following four photographs, © by Flavio Quintana and Yorio Pablo, were taken at Punta León, Chubut, Argentina, in November 2000.

Note the orange-tinged base of bill in lower bird and the positioning of the gonys near the base of the bill in the top bird and near the middle of the bill in the lower bird. According to Flavio Quintana, "I saw few individuals with bright orange bills but unfortunately we don't have any pictures."