La baldriga capnegra o virot capnegre (Puffinus gravis) és una au del gènere Puffinus àmpliament distribuïda per l'oceà Atlàntic.
miniatura|esquerra|Un exemplar de baldriga capnegra a Carolina del Nord, Estats Units, el 2007
Referències Austin, Jeremy J. (1996): Molecular Phylogenetics of Puffinus Shearwaters: Preliminary Evidence from Mitochondrial Cytochrome b Gene Sequences. Molecular Phylogenetics and Evolution 6(1): 77–88. Austin, Jeremy J.; Bretagnolle, Vincent & Pasquet, Eric (2004): A global molecular phylogeny of the small Puffinus shearwaters and implications for systematics of the Little-Audubon's Shearwater complex. Auk 121(3): 847–864. HTML abstract. Bull, John L.; Farrand, John Jr.; Rayfield, Susan & National Audubon Society (1977): The Audubon Society field guide to North American birds, Eastern Region. Alfred A. Knopf, New York. Harrison, Peter (1987): Seabirds of the world : a photographic guide. Princeton University Press, Princeton.
Categoria:Puffinus