Accipiter imitator on Isabel Island, Solomon Islands

We report two recently collected specimens of Accipiter imitator from Isabe l Island, one of them the first specimen of a melanistic individual of the species. Surprisingly, we found no specimen records from Isabel of Accipite r albogularis, a very similar congener that occurs together with A. imitato r on several islands. We call attention to the difficulties of sight identi fication and, based on a study of specimens, describe and tabulate morpholo gical differences between the two species. We also give skeletal measuremen ts of several species of Accipiter.