Northern Goshawk Surveys on BLM Lands Within the St. Joe Mountains of Northern Idaho

A cooperative project between the Department of the Interior, Bureau of Land Management (BLM) and the Idaho Department of Fish and Grune was conducted to determine the presence or absence of the Northern Goshawk (Accipiter gentilis) on BLM lands in northern Idaho. Responses to taped broadcasts of the adult "alarm" and juvenile "wail" calls were recorded. Two hundred thirty-eight calling stations were surveyed between 6 June 1994 and I August 1994. Fourteen responses at 8 different calling stations were elicited. Three hundred forty-three calling stations were surveyed between 8 June 1995 and 14 August 1995. Four responses were recorded at 3 different stations. In 1996, 274 calling stations were surveyed between 6 June and 2 August. One response was recorded during the fledgling period. One hundred sixty-eight calling stations were surveyed between 4 June 1998 and 6 August 1998. One response was recorded during the nestling period. No correlation between sex or age and response rate could be determined from the data collected. Different types of responses as related to sex or age did occur in 1994. Seven goshawk territories were documented, 4 in 1994 and 1 each in 1995 and 1996. Of the 7 territories, 4 were probable breeding territories. A response was detected at the same territory in 1994, 1995, and 1998; however, no active nest sites were found.