You selected Agriornis montana (Orbigny & Lafresnaye, 1837). This is a synonym for:

Accepted scientific name:
Agriornis montanus (Orbigny & Lafresnaye, 1837) (accepted name) 3 literature references for Agriornis montanus (Orbigny & Lafresnaye, 1837)
Synonyms:
Agriornis montana (Orbigny & Lafresnaye, 1837) (synonym) 2 literature references for Agriornis montana (Orbigny & Lafresnaye, 1837)
Infraspecific taxon: Agriornis montanus insolens P. L. Sclater & Salvin, 1869
Agriornis montanus intermedius Hellmayr, 1927
Agriornis montanus leucurus Gould, 1839
Agriornis montanus maritimus (Orbigny & Lafresnaye, 1837)
Agriornis montanus montanus (Orbigny & Lafresnaye, 1837)
Agriornis montanus solitarius P. L. Sclater, 1859
Common names:
Common name Language Country
Black-billed Shrike-Tyrant English - Click here to show the literature
 reference
Classification:
Animalia
Phylum Chordata
Class Aves
Order Passeriformes
Family Tyrannidae
Genus Agriornis
Distribution: -
Additional data: -
Source database: ITIS, Sep 2009
Latest taxonomic scrutiny: -
Online resource: http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=711529
CoL taxon LSID: urn:lsid:catalogueoflife.org:taxon:de3889c6-29c1-102b-9a4a-00304854f820:col20110201