Impatient House Wrens have been seen here as early as March 15th (1903) and several times between the 1st and 10th of April.  During some years they arrive between the 15th and 21st of April, the bulk of the migrants passing between the 5th and 8th of May, at which time they swarm in the willows of the Missouri bottoms.  They leave during early September and are rarely seen after the middle of the month. 

     This wren nests in birdhouses, in crevices about buildings, in the pockets of discarded garments, in tin cans and in other similar situations too numerous to list.  It also nests in the deep woods of the bottom lands and other wild places in natural cavities in trees and deserted woodpecker holes.  Five to seven eggs are laid in May.