Large-billed Tern (Phaetusa simplex) [XC674493]
by Franco Vushurovich from Santa Rita do Novo Destino, Goi\u00e1s, Ch\u00e1cara Jayrson, Brazil (flight call)
Large-billed Tern (Phaetusa simplex) [XC741085]
by Vin\u00edcius Soares Domingues from Santa Rita do Novo Destino, Goi\u00e1s, Ch\u00e1cara Jayrson, Brazil (flight call)
Subspecies
The following 2 subspecies are recognised:
simplex (Gmelin, 1789) - Eastern Colombia east to Trinidad, and south through Amazonia; western Ecuador.
chloropoda (Vieillot, 1819) - Basins of R Paraguay and R Paraná south-west to north-central Argentina (Santiago del Estero, very rarely Cordoba). Non-breeding visitor to Uruguay.