A 2007 paper treated a Sierra Leone population as Chattering Cisticola, while noting it might represent a distinct local form. It describes grey-brown birds with plain backs recorded around wet rice fields.
Birds treated as C. anonymus in the 2007 account were described as grey-brown with plain backs, whitish underparts and a rufous-brown crown and upper nape. The authors left open whether the Sierra Leone population was a distinct local form.
In 2005, birds treated as C. anonymus at one Sierra Leone site used rank growth on bunds between wet rice fields and sang from low vegetation. The paper says this local population may be distinct and needs further study.
An extinction-risk assessment has not been added yet.