Lamprotornis

Lamprotornis is a large genus of glossy-starlings all of which occur in Africa south of the Sahara. They have glossy blue or green upper parts, which is due to hollow melanin granules arranged in a single layer near the feather barbule's surface. This unique arrangement led to some glossy starlings formerly placed in the genus Spreo being transferred to Lamprotornis, since they shared this feature (but see also below).