Assertion: tern's subspecie | /r/HasProperty | treated as separate species
Facets:
value: sometimes
type: TEMPORAL
Source sentences:
text: A former subspecies are now treated as a separate species called Cabot's tern (T. acuflavidus), which breeds on the Atlantic coasts of North America, northern and eastern South America, and has wandered to Western Europe.
text: The subspecies G. a. microrhyncha, the little white tern, is sometimes considered as a separate species, Gygis microrhyncha.