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 3 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

Courtship feeding by a male Cayenne Tern (with two fish) to a female Sandwich-type Tern at Aruba, 1 June 1989. Photo © by Ruud van Halewijn. This photo demonstrates hybridization between 'eurygnatha' and presumed 'acuflavida', or between bill colour morphs of if the dark-billed individual is a dark-billed morph of 'eurygnatha'.