What type of nests do wrens live in?
North American Wrens which there are 9 types, are secretive.
They (House Wren, Carolina Wren, Rock Wren, Canyon Wren) will nest
in holes, trees and birdhouses. The Marsh Wren makes a globe-shaped
nest which are attached to plants just above the water. Cacus Wren
builds a nest shaped like a football in cacti.