Family Ovenbirds (Furnariidae)

Least Concern

Ruddy Treerunner (Margarornis rubiginosus)


French: Anabasitte rousse German: Rostbrust-Stachelschwanz Spanish: Subepalo rojizo

Margarornis rubiginosa


, 1865,

San José, Costa Rica


Recent genetic analysis#R suggests that this species is sister to all remaining members of genus. Two subspecies recognized.

Subspecies and Distribution
  • M. r. rubiginosus Lawrence, 1865 – mountains of Costa Rica (S from Cordillera Guanacaste) and W Panama (W Chiriquí).
  • M. r. boultoni Griscom, 1924 – mountains of C Panama (E Chiriquí, Veraguas).
  • Descriptive notes

    14–16 cm; 17–24 g. Very reddish-brown furnariid that forages much like a dendrocolaptid woodcreeper. Has super­cilium and broad eyering buffy whitish, flecked... read more


    Call a thin, whistled “tsit”, usually in rapid, irregular series; also gives metallic chirping... read more


    Montane evergreen forest at 1800–3000 m; locally down to 1200 m.

    Food and feeding

    Analysis of stomach contents indicates diet consisting of (in terms of numbers of prey items) nearly 50% cockroach (Blattodea) egg cases, c... read more


    Fledglings recorded in Mar–Jul. No further information.



    Status and conservation

    Not globally threatened. Restricted-range species: present in Costa Rica and Panama Highlands EBA. Fairly common to common. Seems to be fairly adaptable; found in fragmented... read more

    Recommended citation

    Remsen, J.V., Jr (2020). Ruddy Treerunner (Margarornis rubiginosus). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 23 January 2020).