A research kit may be obtained from the Cornell laboratory of Ornithology's Nest Box Network Program. It includes information on such topics a monitoring nest boxes, predators and competitors, taking field notes, the feather study, the calcium study and other topics as well. Currently there is not enough scientific data to make a clear judgment on whether one should remove the old nesting material after the breeding season or leave it in the nest box. NatureCraft will provide information as it becomes available. Physical Description Male and female House Wren look alike.
Juveniles have a reddish brown rump, and their underparts are a darker buff.
This species song is a musical stuttering that rises and falls. Distribution and Breeding Habitat House Wren occupy the northern two-thirds of the United States and parts of Canada. They breed in forest edges, shrub lands, swamps, fields, farmlands, and suburban parks. Diet Gleaning their food from tree foliage, House Wrens feast on a variety of invertebrates, including millipedes, spiders, snails, caterpillars, grasshoppers, ants, and beetles. The male arrives first on the breeding territory.