Violet crow explained

The violet crow (Corvus violaceus) is a species of the crow family, Corvidae, native to Seram, an island in Indonesia. It was long considered a subspecies of the slender-billed crow but has been shown to be divergent genetically.[1] Violet crows have a dark black head and slightly blue black body and have a slightly shorter bill than most other crow species.

References

http://www.hbw.com/species/violet-crow-corvus-violaceus

Notes and References

  1. Jønsson, Knud A. . Fabre, Pierre-Henri . Irestedt, Martin . 2012. Brains, tools, innovation and biogeography in crows and ravens. BMC Evolutionary Biology. 12. 10.1186/1471-2148-12-72 . 72 . 22642364 . 3480872 . free . 2012BMCEE..12...72J .