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Canyon Wren (Catherpes mexicanus)
http://www.mbr-pwrc.usgs.gov/id/framlst/i7170id.html
Identification tips, range maps, life history, and photo.
Catherpes mexicanus (Canyon Wren)
http://animaldiversity.ummz.umich.edu/site/accounts/information/Catherpes_mexicanus.html
Physical characteristics and natural history of this bird.