Rock wren (Salpinctes obsoletus), Zion National Park, 2015.

Like most desert animals, rock wrens don't drink water (even in captivity). They get their water from the insects and spiders they eat. They are also fantastic singers, especially males. He may have an amazing repertoir of 100 or more song types, many of which that appear to be learned from others! They usually build a pavement / walkway of small stones leading to the nest cavity.