A COMPARISON OF BEHAVIOR FOR TWO COHORTS OF CAPTIVE-REARED
GREATER SANDHILL CRANES RELEASED IN NORTHERN ARIZONA DANIEL P.
MUMMERT, Northern Arizona University, School of Forestry, P.O.
Box 15018, Flagstaff, AZ, 86011, USA CAROL L. CHAMBERS, Northern
Arizona University, School of Forestry, P.O. Box 15018,
Flagstaff, AZ, 86011, USA DAVID H. ELLIS, USGS Patuxent Wildlife
Research Center, 11410 American Holly Drive, Laurel, MD
20708-4019, USA To determine how the behavior of greater
sandhill cranes (Grus canadensis tabida) changes according to
time of year, time of day, and number of days after release, we
observed the activities of 2 groups of captive-reared greater
sandhill cranes at Mormon Lake, northern Arizona. The behaviors
we compared were alert, loafing, sleeping, foraging, preening,
locomotion, and other. We found costume-reared subadult greater
sandhill cranes that were established at the study site for a
year spent more time foraging and being alert towards predators
than parent-reared juvenile greater