In the Americas, the Royal Terns on the east coast, during the breeding season (April to July), occur in the US north to Virginia, occasionally drifting north to Long Island, New York. The southern end of their breeding range is Texas. The wintering range on the east coast is from North Carolina south to Panama and the Guyanas, also the Caribbean islands. On the western coast of the Americas, the royal tern spends the breeding season from the US state of California to Mexico, wintering from California south to Peru.
The Laughing Gull (Leucophaeus atricilla) is a medium-sized gull of North and South America. Named for its laugh-like call, it is an opportunistic omnivore and scavenger. It breeds in large colonies mostly along the Atlantic coast of North America, the Caribbean, and northern South America. The two subspecies are: L. a. megalopterus – which can be seen from southeast Canada down to Central America, and L. a. atricilla which appears from the West Indies to the Venezuelan islands. The laughing gull was long placed in the genus Larus until its present placement in Leucophaeus, which follows the American Ornithologists’ Union.