The Growling Riflebird, Ptiloris intercedens also known as Eastern Riflebird is a medium-sized passerine bird of the Paradisaeidae family. The male is a velvet black and green bird of paradise with black flank plumes, black curved bill, yellow mouth, blackish feet and dark brown iris. It has an iridescent greenish blue on its crown, throat, breast shield and central tail feathers. The female is a rufous brown bird with barred buff below.
Its appearance resembles and sometimes considered as a subspecies of the Magnificent Riflebird, being different by the lower breast and abdomen coloration, male's distinctive growling song and feathered culmen base.
The Growling Riflebird is distributed and endemic to the lowlands of easternmost Papua New Guinea. The male is polygamous and performs courtship display solitarily. The diet consists mainly of fruits and arthropods.
A common species throughout its range, the Growling Riflebird is evaluated as Least Concern on the IUCN Red List of Threatened Species. It is listed on Appendix II of CITES.