Its genus was long included in Venericardia, but is increasingly treated as distinct.

The two have often been consider conspecific, but are increasingly treated as separate species:

Due to differences in plumage, colour of bill and voice, the three are increasingly treated as separate species.

Events and details were increasingly treated metaphorically and the short story grew closer to poetry.

Nevertheless, in recent years, as the disaster has gained historical perspective, it has been increasingly treated by researchers and journalists.

The cultural authorities have increasingly treated unconventional, let alone experimental, theater as a form of subversion.

Within the hospitals, acute cases were increasingly treated alone, and separate departments were set up for different categories of patient.

It has often been considered conspecific with E. scolopaceus, but they are increasingly treated as separate species.

The three widely accepted subspecies are increasingly treated as distinct species:

The Supreme Court has increasingly treated campaign activity as protected speech and struck down limits on it.