After an emergency fundraising campaign seeking to offset several years of declining revenues came up short, The Big Apple Circus Ltd. filed for Chapter 11 protection Sunday, naming Debeviose & Plimpton as its lead bankruptcy counsel.

Natasha Labovitz, co-chair of Debevoise’s business restructuring and workouts group, and business restructuring counsel Christopher Updike are listed as debtors’ counsel to the circus in its bankruptcy petition. The duo will advise the circus on a pro bono basis, said a Debevoise spokesman.