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Productivity at Active Peregrine Falcon eyries in Montana, 2006 |
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Revised 8/31/2006 |
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Eyrie |
Date(s) |
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No.Young |
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Number |
Checked |
Observer(s) |
Location |
Fledged |
Remarks |
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1 |
5-Jul |
Sumner |
Clark Fork River |
4 |
One young already fledged, other ready to fledge. |
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2 |
|
USFWS |
Centennial Valley |
Unknown |
Roscoe could not check because of too much snow |
|
3 |
9-Aug |
Donofrio |
Bitterroot |
2 |
Fledged young seen on two separate observations |
|
4 |
16-Aug |
Donofrio |
Bitterroot |
3 |
Confirmed minimum count of three fledged young |
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5 |
June |
Eggeman & Zucchi |
Bitterroot |
2 |
Good count |
|
6 |
1 &19 July |
Rogers |
Boulder River |
3 |
Chicks fledged at final count |
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7 |
3-Aug |
Sumner & Sumner |
Troy |
Unknown |
No fledged young observed |
|
8 |
13-Jul |
Rogers |
Livingston |
3 |
Birds Moved to Tastee Freeze? |
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9 |
2-Jul |
Sumner, Davis , Fuller |
Blackfoot River |
2 |
Minimum Count |
|
11 |
11-Jul |
Sumner & Crow |
Missouri River |
2 |
Minimum Count-young fledged |
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13 |
29,30Jn,18Jly |
Rogers |
Bighorn |
2 |
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15 |
6-Jul |
Sumner |
Clark Fork River |
3 |
Minimum Count |
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16 |
|
Rogers |
Bighorn |
Unknown |
Unable to check eyrie |
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17 |
25-Jul |
Sumner |
Clark Fork River |
1 |
Possibly two young-fledged |
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18 |
28-Jun |
Sumner & Crow |
Clark Fork River |
4 |
Young fully feathered out |
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19 |
1-Jul |
Sumner |
Clark Fork River |
2 |
Young fledged, minimum count |
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20 |
17-Jul |
Rogers |
Red Lodge |
3 |
Fledged chicks sitting on cliff face |
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21 |
July |
Rogers |
Madison River |
3 |
Chicks feeding on immature gull at top of cliff |
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22 |
27-Jun |
Davis |
Blackfoot River |
1 |
`Young are ready to fledge |
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23 |
4-Jul |
Sumner |
Clarks Fork/Flathead River |
3 |
Young have already fledged |
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24 |
1-Jul |
Donofrio |
Bitterroot |
2 |
Young in large downy stage |
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25 |
|
McEneaney |
Yellowstone Park |
2 |
Yellowstone Park Survey |
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26 |
17-Jul |
Rogers |
Bighorn |
3 |
Chicks sitting together on top of cliff |
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27 |
Unknown |
Roscoe |
Centennial Valley |
0 |
Adults present but no young observed |
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28 |
23-Jun |
Crow |
Flathead Reservation |
3 |
Young in downy stage |
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29 |
28-Jun |
Donofrio |
Bitterroot |
2 |
Young mostly feathered |
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30 |
1-Jul |
Sumner |
Clark Fork River |
2 |
Young behind shrub, need recount |
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31 |
3-Aug |
Donofrio |
Bitterroot |
3 |
Young had already fledged |
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32 |
29-Jun |
Sumner & Crow |
Clark Fork River |
3 |
Young in various stages of development |
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33 |
27-Jul |
Sumner,Eggeman,Zucchi |
Bitterroot |
2 |
Minimum count, possibly 3 young |
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34 |
29-Jun |
Sumner & Crow |
Clark Fork River |
3 |
Moved nesting cliff to the East |
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35 |
1-Jul |
Sumner |
Clark Fork River |
1 |
2nd check, still only one young |
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36 |
12-Jul |
Rogers/Anderson |
Hebgen Lake |
4 |
Final count |
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37 |
18-Jul |
Rogers |
Yellowstone River |
2 |
Difficult to get good count through trees |
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38 |
Unknown |
Roscoe |
Centennial Valley |
1 |
Final count |
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39 |
Unknown |
Roscoe |
Centennial Valley |
3 |
Final count |
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40 |
2,4 July |
Rogers/Hall |
Billings |
3 |
Young fledged by 2 July |
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41 |
Multiple |
Donofrio |
Bitterroot |
Unknown |
Golden eagles may have caused adults to move |
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42 |
12-Jul |
Rogers |
Gallatin Canyon |
2 |
Minimum Count |
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43 |
27-Jun |
Dood |
Smith River |
2 |
Minimum Count |
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44 |
Multiple |
Anderson/Rogers |
Gallatin Canyon |
0 |
Failed, adults present early in nesting season |
|
45 |
2-Jul |
Rogers |
Stillwater River |
4 |
Final check, chicks ready to fledge |
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46 |
22-Jul |
Rogers |
East Rosebud |
1 |
This eyrie can't be checked accurately |
|
47 |
27-Jun |
Donofrio |
Bitterroot |
3 |
Young in large downy stage |
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48 |
12-Jul |
Sumner & Crow |
Missouri River |
3 |
Young already fledged-minimum count |
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49 |
Multiple |
Sumner & Crow |
Flathead Reservation |
0 |
We deteced no young during multiple visits |
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50 |
12-Jul |
Rogers |
Madison River |
2 |
Chicks have ledged |
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51 |
26-Jun |
Sumner & Crow |
Flathead River |
3 |
Young in large downy stage |
|
52 |
3-Jul |
Sumner |
Big Fork |
4 |
Young about 42 days old |
|
70 |
1-Jul |
Rogers |
Boulder River |
4 |
Chicks on ledge |
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71 |
6-Jul |
Pils |
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