Habitat
Dense tussock-grassland, growing from the high-water mark behind boulder beaches with accumulated dead kelp. Also found in rushes and among rock outcrops up to 1.6 km from coastal tussock on islands with no introduced predators.
Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.
Population
Estimated population is 9,000 - 16,000 (2010) and stable.
Status LC
Predation by the potential introduction of mammals to its breeding islands is the main threat. Grazing pressure and fires are also potential threats.
For more information see BirdLife International Species Factsheet.
Voice
Harsh 'chiz' notes. Song is complex and variable, mixed phrase of trills and whistles with harsh notes
Cobb's Wren (Troglodytes cobbi) [XC306291]
by Andrew Spencer from Sealion Island, Falklands, United Kingdom (begging call, call)
Cobb's Wren (Troglodytes cobbi) [XC318718]
by Robson Silva e Silva from Carcass Island, Falkland Islands, United Kingdom (call)
Subspecies
No subspecies.
Troglodytes aedon (Sibley and Monroe 1990, 1993) has been split into Southern House Wren (Troglodytes musculus) and Cobb's Wren (Troglodytes cobbi) following Woods (1993), contra SACC (2005), pending the outcome of investigation into the taxonomy of this form by SACC.
Forms a superspecies with House Wren (Troglodytes aedon), Brown-throated Wren (Troglodytes brunneicollis), Southern House Wren (Troglodytes musculus), Clarion Wren (Troglodytes tanneri) and Cozumel Wren (Troglodytes beani), and all often treated as conspecific. However, it is distinct from the others in large size, different plumage and markedly different ecology.
BirdLife International Species Factsheet