Productivity at Active Peregrine Falcon eyries in Montana, 2007

Revised 9/03/2007

Data is tentative and will be finalized when all information is received

Eyrie

Date(s)

No.Young

Number

Checked

Observer(s)

Location

Fledged

Remarks

1

Numerous

Haynam, Palmer, Davis, Fuller

Clarks Fork River

1

Observed by Davis & Fuller

2

 

Roscoe

Centennial Valley

 

Not checked

3

Numerous

 Donofrio

Bitterroot

1

Young estmate fledge on 5 July

4

Numerous

Donofrio

Bitterroot

2

Estimated fledge date of 25 June

5

1-Jul, 6 Jul

Eggeman

Bitterroot

2

Fledged between 6 July and 10 July

6

1-Jul

Sumner & Sumner

Boulder River

2

Young fledged from nesting ledge

7

Numerous

Sumner, Haynam,Palmer

Troy

0

No young observed

8

18-Jun

Sumner & Sumner

Livingston

3

Young about 25 days old

9

Numerous

Sumner & Haynam

Blackfoot River

0

No young observed

13

26-Jun

Sumner & Sumner

Bighorn

3

Minimum count, young fledged

15

10-Jul

Haynam & Palmer

Clark Fork River

1

Young fledged from nesting ledge

16

 

 

Bighorn

 

No adults or young observed

17

Numerous

Sumner, Haynam,Palmer

Clark Fork River

0

No young observed

18

11-Jul

Haynam & Palmer

Clark Fork River

3

Young still on nesting ledge

19

Numerous

Haynam

Clark Fork River

1

Young still on nesting ledge

20

28-Jun

Sumner & Sumner

Red Lodge

2

Young fledged from nesting ledge

21

 

 

Madison River

 

Not checked

22

Numerous

Sumner, Haynam, Davis

Blackfoot River

0

No young observed

23

Numerous

Sumner

Clarks Fork/Flathead River

2

Minimum count

24

Numerous

 Donofrio

Bitterroot

2

Young should fledge on 4 July

25

08-Jul

McEneaney

Yellowstone Park/Montana

2

No comments

26

Numerous

Hall, Parks, Apple

Bighorn

2

Young ready to fledge on 10 July

27

5/8, 6/20, 8/6

Roscoe

Centennial Valley

1

No comments

28

Numerous

Haynam & Palmer

Flathead Reservation

0

No young observed

29

Numerous

 Donofrio

Bitterroot

2

Estimated fledge date of 5 July

30

Numerous

Haynam & Palmer

Clark Fork River

0

No young observed

31

Numerous

 Donofrio

Bitterroot

0

Eyrie has apparently failed

32

Numerous

Haynam & Palmer

Clark Fork River

0

No young observed

33

26-Jun

Eggeman

Bitterroot

2

Young still on nesting ledge, ready to fledge

34

26-Jun

Haynam & Palmer

Clark Fork River

3

Young counted on ledge

35

Numerous

Sumner & Haynam

Clark Fork River

0

No observed young present

36

Mid July

Anderson

Hebgen Lake

2

One young observed, heard other young

37

25-Jun

Sumner & Sumner

Yellowstone River

2

Minimum count, fledged from ledge

38

5/8, 6/20, 8/6

Roscoe

Centennial Valley

2

3 adults present on tower 6/11

39

5/8, 6/20, 8/6

Roscoe

Centennial Valley

0

occupied but no young

40

16-Jun

Hall

Billings

2

Young are ready to fledge

41

Numerous

 Donofrio

Bitterroot

1

Estimate fledge date of 12 July

42

3-Jul

Sumner & Sumner

Gallatin Canyon

3

Young fledged from nesting ledge

43

 

 

Smith River

 

Not checked

44

Numerous

Sumner & Blair

Gallatin Canyon

0

No young observed

45

30-Jun

Sumner & Sumner

Stillwater River

3

Young fledged from nesting ledge

46

13-Jul

Sumner & Sumner

East Rosebud

2

Young fledged from nesting ledge

47

21-Jun

Donofrio

Bitterroot

2

Estimated fledge date of 19 June

49

Numerous

Sumner & Haynam

Flathead Reservation

0

No young observed

50

4-Jul

Sumner

Madison River

 

Prairie Falcons nesting

51

Numerous

Haynam & Palmer

Flathead River

3

Ledge count

52

Numerous

Byron Crow

Big Fork

2

Reported in newspaper article

58

Numerous

Donofrio

Bitterroot

0

Eyrie has apparently failed

61

1-Jul

Sumner & Sumner

Boulder River

3

Young fledged from nesting ledge

63

Numerous

Haynam & Palmer

Clark Fork River

2

Young still on nesting ledge

64

10-Jul

Sumner & Sumner

SF Teton River

1

Young about 30 days old

71

4-Jul

Sumner & Anderson

Hebgen Lake

2

Young still on nesting ledge-ready to fledge

72

Numerous

Sumner & Haynam

Flathead River

 

No young observed

73

14-Jul

Sumner & Sumner

Gallatin Canyon

2

Young on ledge, ready to fledge

74

07-Jul

McEneaney

Paradise Valley

2

No comment

77

21-Jun

Sumner & Sumner

Clark Fork River

2

Minimum count, fledged from ledge

79

16-Jun

Sumner & Sumner

Jefferson River

2

Minimum count, fledged from ledge

80

26-Jun

Sumner & Sumner

Yellowstone River

2

Minimum count, fledged from ledge

81

10-Jul

Sumner & Sumner

East Front

2

Young on ledge, about 32 days old

82

Numerous

Sumner, Haynam, Palmer

Lower Clark Fork River

 

Only one adult observed

83

15-Jul

Haynam

Flathead River

3

Young fledged from nesting ledge

84

Numerous

Haynam & Palmer

Clark Fork River

0

No young observed

86

18-Jun

Haynam & Craighead

Flathead River

4

Young 20-25 days old

87

13-Jul

Sumner & Sumner

Yellowstone River

2

Young about 30 days old

88

16-Jul

Haynam

Kootenai River

3

Young fledged from nesting ledge

89

Numerous

 Donofrio

Bitterroot

0

Eyrie has apparently failed by 25 June

90

05-Jul

McEneaney

Yellowstone Park/Montana

2

No comments

92

27-Jun

Sumner, Bromley, Pickett

Big Horn

3

Young have fledged from ledge

93

Numerous

Haynam & Palmer

Clark Fork River

0

No adults or young observed

94

Numerous

Hayman, Sumner, Davis, Palmer

Blackfoot River

3

Young about 37 days old on 7/17

95

20-Jul

Sumner, Heath,Jaquith, Pitman

Red Lodge

1

Young is ready to fledge

96

26-Jun

Haynam & Palmer

Clark Fork River

2

Young counted on ledge

97

22-Jul

Sumner

Red Rock Lakes

3

Young have fledged from ledge

98

22-Jul

Roscoe

Centennial Valley

1

New eyrie

Total with fledge counts

67

Running Total Young*

108

Young/active eyrie

1.6

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