) 



MONTANA NATURAL HERITAGE PROGRAM 

 Element Occurrence Record 



Scientific Name: HISTRIONICUS HISTRIONICUS 

 Common Name: HARLEQUIN DUCK 



Global rank: G5 

 State rank: S2B,SZN 



Forest Service status: SENSITIVE 

 Federal Status: C2 



Element occurrence code: ABNJB15010. 001 

 Element occurrence type: 



y 



Survey site name: BOULDER RIVER 



EO rank: C 



EO rank comments: NOT SURE OF BOATING AND FISHING USE; IF BOTH ARE MODERATE TO HEA\ry, T 

 RANK SHOULD BE D. 



County: PARK 

 USGS quadrangle : 



Township: Range 

 006S 012E 

 Precision: G 

 Survey date: 

 First observation 

 Last observation: 



MOUNT DOUGLAS 

 CHROME MOUNTAIN 



Section: 



04 



1979 

 1993-07-22 



TRS comments : 

 SE4 



Elevation: 5200 - 7350 

 Slope/aspect : 

 Size (acres) : 



Location: I 



FROM BIG TIMBER, MT, DRIVE SOUTH AND WEST 25 MILES ALONG THE MAIN 

 BOULDER RIVER TO THE NAT ' L FOREST BOUNDARY, THENCE ANOTHER 17 MILES TO 

 HILLEARY BRIDGE, JUST S. OF FOURMILE CR. J- 



Element occurrence data: 



CA. 5-6 PAIRS OBSERVED EACH SPRING, BUT GENERALLY ONLY ONE OR TWO (OR 

 NO) BROODS REPORTED LATER IN SUMMER. MOST OBSERVATIONS FROM FOURMILE - 

 HICKS PARK SECTION. (SPECIFIC OBSERVATION DATA ON FILE AT MTNHP. ) 



General site description: 



A CA. 20 MILE SEGMENT OF MOUNTAIN STREAM, FROM THE EAST FORK ABOVE BOX 

 CANYON STATION DOWN TO FALLS CREEK. 



Land owner/manager: B 



GALLATIN NATIONAL FOREST, BIG TIMBER RANGER DISTRICT | 



Comments : k 



OBSERVATIONS FROM 1979 TO 1986 BY EDITH YAPERNCICH, BILLINGS, MT, IN :; 



VICINITY OF HILLEARY BRIDGE. IN 1990: ANN HOPKINS REPORTS 8 BIRDS ^ 



(FEMALE + 7 YOUNG?) AT HICKS PARK C.G. SOME SURVEYS DONE ON MAIN STEM ^ 



AND EAST & WEST FORKS IN EARLY 1990s. TRUE EXTENT OF OCCUPIED BREEDING 



HABITAT STILL UNKNOWN. 



Information source: 



ZOOLOGIST, MONTANA NATURAL HERITAGE PROGRAM, 1515 

 EAST SIXTH AVENUE, P.O. BOX 210800, HELENA, MT 

 59620-1800. 406/444-3009. 



Specimens: ENG, R.L. (S.N.). 26 MAY 1983. SPECIMEN #6733. MONT. 

 Observation sximmary: 



Observer/date 

 1993-05-30, FOX 

 1993-06-12, CASTREN 

 1993-06-13, CASTREN 

 1993-06-14, CASTREN 

 1993-07-22, CASTREN 



Location: 

 FOURMILE C.G. 

 T06SR12E, S4 

 T06SR12E, S16 

 WEST BOULDER RIVER 

 HICKS PARK C.G. 



Observation: 



PAIR 



5 MALES 



1 MALE 



NONE 



HEN + 1 JUV. 



55 



