What do senior-status federal judges do?

The answer, as shown in this article from the Federal Judicial Center website, is just about everything.

The article says in part: "In fiscal year 2005, 322 senior district judges — 32 percent of all sitting federal district judges — terminated 16.5 percent of all civil and criminal cases and conducted 17.2 percent of all trials. In the appeals courts, 91 senior judges — 33 percent of all circuit judges — handled 18 percent of all participations in oral hearings and submissions of briefs."