- 4.7–5.9 in
- 9.1 in
- 0.5–0.6 oz
- Troglodyte des rochers (French)
- Chivirín saltarroca, Troglodita saltarroca, Saltapared roquero (Spanish)
- The male Rock Wren is a truly remarkable singer and can have a large song repertoire of 100 or more song types, many of which seem to be learned from neighbors.
- The Rock Wren usually builds a pavement or walkway of small, flat stones or pebbles that leads to the nest cavity. The nest is usually located in a rock crevice out of sight, but the pavement may give away the nestâ€™s location. The function of this pavement is unknown.
- The Rock Wren is not known to drink water, but instead gets all it needs from its food. Even five birds kept in captivity did not drink water when it was available.
Arid or semiarid areas with exposed rock; desert to alpine habitats.
Insects and other arthropods.
- Clutch Size
- 1–10 eggs
- Egg Description
- White with fine spots of reddish brown.
- Condition at Hatching
- Helpless, with some down.
Loose cup built with grass, bits of wood, bark, moss, hair, and occasionally fresh plant material in shallow space; lined with rootlets, hair, wool, spider silk. Placed in cavity or crevice in or among rocks, usually with foundation of stone and often with pavement of small stones extending from nest to entrance of nest cavity and sometimes beyond.
Gleans prey from rocks, removes prey from spider webs; repeatedly hops vertically from ground to capture flying insects.
Rock Wren is declining throughout its range. Populations declined by 47% between 1966 and 2014, according to the North American Breeding Bird Survey. Partners in Flight estimates a global breeding population of 3.7 million, with 74% spending at least part of the year in the U.S., and 44% in Mexico. Some may also breed in southwest Canada. The species rates a 12 out of 20 on the Continental Concern Score. Partners in Flight listed it as a Common Bird in Steep Decline, however, Rock Wren is not on the 2014 State of the Birds Watch List.
- Lowther, P. E., D. E. Kroodsma, and G. H. Farley. 2000. Rock Wren (Salpinctes obsoletus). In The Birds of North America, No. 486 (A. Poole and F. Gill, eds.). The Birds of North America, Inc., Philadelphia, PA.
- North American Bird Conservation Initiative, U.S. Committee. 2014. State of the Birds 2014 Report. U.S. Department of Interior, Washington, DC.
- Partners in Flight. 2012. Species assessment database.
- USGS Patuxent Wildlife Research Center. 2014. North American Breeding Bird Survey 1966–2014 Analysis.