 Unlike many of its fellow mimids , the black catbird is not known to imitate any other species . Its song consists of repeated phrases of notes ranging from harsh and scratchy to warbled and flute @-@ like , often interspersed with metallic clicking buzzes . It often sings from exposed perches . It has a variety of calls , including some which are quite similar to those of the gray catbird ; these are variously described as a harsh rriah , a nasal chrrh and a grating tcheeu . 
