ABSTRACT 



Breeding pair surveys for Harlequin Ducks were done on 242 km of 1 8 streams during 

 May and June, 1994; a total of 57 Harlequins (32 males, 25 females) were seen on 9 streams. 

 Brood surveys were done on 245 km of 14 streams during July and August, 1994; a total of 82 

 Harlequins (15 females, 67 young in 15 broods) were seen on 8 streams. Harlequins were 

 reported on 2 additional streams. Reproductive success, on streams surveyed both for pairs and 

 broods, averaged 0.33 broods per female. Average brood size at or near fledging (Class III) was 

 4.00. Breeding was confirmed on Grave Creek (Fortine) for the first time in 1994; 4 adult ducks 

 were seen on Swift Creek, more than previously reported. We found ducks on Sullivan Creek in 

 1994, where they were not found during 1993. No birds were seen during pair (May) or brood 

 (August) surveys on Big Creek (Koocanusa), which had Harlequins in 1990, nor on a brood 

 survey of the North Fork of the Blackfoot River, where ducks were seen in 1993. 



We continued banding Harlequin Ducks in the Flathead and Clark Fork drainages. Thirty- 

 five Harlequins (7 adult males, 7 adult females, and 19 juveniles) were marked on 7 streams. 

 This brings the total number of Harlequin Ducks banded in Montana since 1991 to 194: 29 adult 

 males, 41 adult females, and 122 juveniles. We observed 1 1 birds previously marked as adults 

 on streams. Additionally, we found 9 adult females marked as juveniles in 1992 on the streams 

 where they were seen in 1994. The banding program, while small in scale for waterfowl, is 

 providing a significant tool for local monitoring and identifying coastal areas where Montana 

 breeding birds molt and winter. 



Two noteworthy movements were detected in 1994: a male marked on McDonald Creek, 

 Glacier National Park, on 6 May 1993, was captured on Hornby Island, along the southeast coast 



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