though smaller, scavenges bugs from the scaly 'bark' of the Joshua trees. Cactus wren? The Cactus Wren ( Campylorhynchus brunneicapillus) is the largest North American wren , and is 18–23 cm (7-9 inches) long.  And he'll come right up and give you the hairy eyeball.                  Last night we were treated to a