Sulphur-bearded Reedhaunter

Here the details of the Sulphur-bearded Reedhaunter named bird below:

SCI Name:  Limnoctites sulphuriferus
Protonym:  Synallaxis sulphurifera Proc.Zool.Soc.London(1868) (1868), Pt3 p.636
Taxonomy:  Passeriformes / Furnariidae / Limnoctites
Taxonomy Code:  sutspi1
Type Locality:  near Buenos Aires, Argentina.
Author:  Burmeister
Publish Year:  1869
IUCN Status:  Least Concern

DEFINITIONS

LIMNOCTITES
(Furnariidae; Ϯ Straight-billed Reedhaunter L. rectirostris) Gr. λιμνη limnē  marsh; κτιτης ktitēs  builder, inhabitant  < κτιζω ktizō  to found, to build; "LIMNOCTITES genus nov.^a   ...   ^a Limnoctites genus nov.   Allied to Limnornis GOULD, but wings and tarsi very much shorter; rectrices much narrower and pointed at the tip, instead of broadly rounded, with the inner web distinctly emarginate subapically; bill much more slender and strongly compressed laterally; culmen nearly straight.  Type: Limnornis rectirostris GOULD.   ...   Darwin's two specimens in the British Museum are the only ones in existence. Although the tail is incomplete in both of the types, there can be no question as to this bird being quite distinct from Limnornis curvirostris found in the same region." (Hellmayr 1925).