Lori A. Davis

Degree Name

Master of Science (MS)

Semester of Degree Completion


Thesis Director

Richard D. Andrews


Screech owl use of 29 artificial cavity boxes placed in wooded habitat on a 14.6 hectare study area in east central Illinois was monitored from 1975 through 1993. A total of 28 screech owls were captured a total of 155 times. Two to 4 adults were usually present and 3 broods were reared in the boxes. The time between first and last capture of birds taken 4 or more times ranged from 270 to 2589 days (average 1740 days). Home range of 5 owls captured 8 to 17 times ranged from 0.45 to 6.0 ha. Cavity boxes were used more in the winter. There was little preference for boxes in any wooded habitat and variations in cavity box size, height of placement, and orientation were of little or no importance.