Pine boxes nailed to trees in four habitat types in southeastern Utah as roosting sites for bats proved ineffective for bats but were utilized by house wrens in all but one habitat. Boxes were most often utilized in the aspen habitat. Hypotheses to account for differential utilization are presented.
Black, Hal L.
"Differential utilization of bat boxes by House Wrens (Troglodytes aedon),"
Great Basin Naturalist: Vol. 43
, Article 14.
Available at: http://scholarsarchive.byu.edu/gbn/vol43/iss3/14