Arid or semiarid areas with exposed rock; desert to alpine habitats.Back to top
Insects and other arthropods.Back to top
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.
|Clutch Size:||4-8 eggs|
|Number of Broods:||2-3 broods|
|Egg Length:||0.6-0.8 in (1.58-2.03 cm)|
|Egg Width:||0.5-0.6 in (1.37-1.57 cm)|
|Incubation Period:||14-16 days|
|Nestling Period:||14-16 days|
|Egg Description:||White with fine spots of reddish brown.|
|Condition at Hatching:||Helpless, with some down.|
Gleans prey from rocks, removes prey from spider webs; repeatedly hops vertically from ground to capture flying insects.Back to top
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.Back to top
Lowther, Peter E., Donald E. Kroodsma and Greg H. Farley. (2000). Rock Wren (Salpinctes obsoletus), version 2.0. In The Birds of North America (P. G. Rodewald, editor). Cornell Lab of Ornithology, Ithaca, New York, USA.
North American Bird Conservation Initiative. (2014). The State of the Birds 2014 Report. US Department of Interior, Washington, DC, USA.
Partners in Flight (2017). Avian Conservation Assessment Database. 2017.
Sauer, J. R., J. E. Hines, J. E. Fallon, K. L. Pardieck, Jr. Ziolkowski, D. J. and W. A. Link. The North American Breeding Bird Survey, results and analysis 1966-2013 (Version 1.30.15). USGS Patuxtent Wildlife Research Center (2014b). Available from http://www.mbr-pwrc.usgs.gov/bbs/.
Sibley, D. A. (2014). The Sibley Guide to Birds, second edition. Alfred A. Knopf, New York, USA.