SURVEYING WOODLAND HAWKS WITH BROADCASTS OF GREAT HORNED OWL VOCALIZATIONS

Pre-recorded vocalizations of great horned owls (Bubo virginianus) bro adcast into predominantly wooded habitat along roadside survey routes resulted in as many detections of resident red-shouldered hawks (Buteo lineatus) and Cooper's hawks (Accipiter cooperii) as broadcasts of ea ch conspecific calls. Survey results for 3 species, expressed as avera ge number of contacts/route, were directly related to the number of re sident pairs located during systematic searches conducted on foot acro ss the study area, Regression models based on road-transect counts wer e significant for predicting abundance of red-shouldered hawks, broad- winged hawks (Buteo platypterus), and Cooper's hawks from our study ar eas.