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Activity at 79 Peregrine Falcon Eyries in Montana-2008 |
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All data is tentative and will be finalized at the end of the field season. |
Revised on 8/2/2008 |
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Eyrie |
Date(s) |
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General |
Active |
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Number |
Checked |
Observer(s) |
Location |
Inactive |
Remarks |
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1 |
4-Apr |
Sumner & Francis |
Clark Fork River |
Active |
Only one adult observed. No adults 4/27 |
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2 |
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Not checked |
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3 |
Numerous |
Lockman & Donofrio |
Bitterroots |
Active |
Copulation observed-one young observed |
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4 |
Numerous |
Donofrio |
Bitterroots |
Active |
Both adults defending against a golden eagle on 4/16-four fledged young counted on 7/24 |
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5 |
28-Apr |
Romeo &Donofrio |
Bitterroots |
Active |
Two young fledged |
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6 |
23-Mar |
Sumner &Shreading |
Boulder River |
Active |
Both adults present |
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7 |
Numerous |
Sumner, Fuller, Hayman |
Bull River |
Active |
Adults present, no young deteced |
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8 |
Numerous |
Sumner |
Yellowstone River |
Active |
Both adults obs. On 6/17-two fledged young on 7/3 |
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9 |
8-Apr |
Sumner, Davis, Haynam |
Blackfoot River |
Active |
Copulation observed, one fledged young on 7/13 |
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10 |
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11 |
7//11 |
Sumner |
Missouri River |
Inactive |
No adults or young observed |
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13 |
Numerous |
Sumner &Shreading |
Big Horn Reservior |
Active |
Both adults observed--three young counted on ledge |
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14 |
6-Apr |
Sumner |
Flathead River |
Active |
Both adults perched on cliff |
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15 |
10-Apr |
Sumner |
Clark Fork River |
Active |
Both adults observed-one young fledged |
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16 |
Numerous |
Shreading |
Big Horn Reservior |
Active |
Counted two young already fledged |
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17 |
27-Mar |
Sumner, Shreading, Francis;Wenzel, Hayman |
Clark Fork River |
Active |
No activity observed on 4/4; one adult present 4/27; 4/29 both adults present. Eyrie has failed |
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18 |
10-Apr |
Sumner |
Clark Fork River |
Active |
Two young fledged |
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19 |
Numerous |
Sumner & Haymam |
Clark Fork River |
Active |
Both adults present on 4/26--no young observed |
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20 |
Numerous |
Sumner & Hall |
Red Lodge |
Active |
Young counted on ledge |
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21 |
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22 |
Numerous |
Sumner ,Shreading,Davis,Wentzel |
Blackfoot River |
Active |
Adult food exchange-two young fledged |
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23 |
Numerous |
Sumner & Haynam |
Flathead River |
Active |
Adults present, no young deteced |
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24 |
9-Apr |
Donofrio |
Bitterroots |
Active |
Both adults perched on cliff-three young fledged |
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25 |
7-Jun |
Sumner & Sumner |
Yellowstone Park |
Inactive |
No activity observed |
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26 |
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27 |
June |
Anderson |
Centennial Valley |
Inactive |
Ravens are nesting on tower |
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28 |
Numerous |
Sumner, Shreading, Haynam |
Flathead Reservation |
Active |
Both adults present on 4/12.-- 3 young observed |
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29 |
Numerous |
Donofrio |
Bitterroots |
Active |
No peregrines observed--GoEa in area. Food delivery to ledge on 4/18. Two young fledged |
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30 |
Numerous |
Sumner & Haymam |
Clark Fork River |
Active |
Both adults diving on Golden Eagle-two young on ledge |
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31 |
Numerous |
Donofrio |
Bitterroots |
Active |
Eyrie failed |
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32 |
Numerous |
Sumner & Haynam |
Clark Fork River |
Active |
Both adults present--no young observed |
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33 |
4/2/;4/18 |
Romerio & Donofrio |
Bitterroots |
Active |
Adult male (?) seen flying and perched. Both adults perched on 4/21. Unable to locate nesting cliff |
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34 |
27-Mar |
Sumner, Shreading, Haynam |
Clark Fork River |
Inactive |
Only one adult observed. No adults 4/9-no young observed |
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35 |
Numerous |
Sumner & Francis |
Clark Fork River |
Active |
Both adults observed on 4/4, one young observed |
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36 |
Numerous |
Anderson |
Madison River |
Active |
Fledged count of two young in July |
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37 |
22-Jun |
Sumner & Sumner |
Yellowstone River |
Active |
Four young counted on ledge |
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38 |
27-May |
Sumner & Anderson |
Red Rocks |
Active |
Both adults protecting--four young (two taken by falconers) |
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39 |
27-May |
Sumner & Anderson |
Red Rocks |
Active |
Only one adult observed-one young found dead |
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40 |
Numerous |
Hall & Sumner |
Yellowstone River |
Active |
One adult observed. 3 young observed on ledge |
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41 |
7-Apr |
Donofrio |
Bitterroots |
Active |
Both adults observed |
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42 |
Numerous |
Sumner & Shreading |
Gallatin River |
Active |
Prairie Falcon obs. On 3/30/., two young counted on ledge |
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43 |
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44 |
Numerous |
Sumner & Anderson |
Gallatin River |
Active |
No young observed |
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45 |
2-Jul |
Sumner & Sumner |
Stillwater River |
Active |
Three young counted on ledge |
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46 |
23-Jun |
Sumner & Sumner |
East Rosebud |
Active |
Both adults observed, unable to locate nesting cliff |
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47 |
Numerous |
Donofrio |
Bitterroots |
Active |
Both adults observed. Defending against rtha.-two young observed |
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48 |
12-Apr |
Sumner & Wenzel |
Missouri River |
Active ? |
Food exchange observed; no activity on 10 July |
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49 |
Numerous |
Sumner ,Shreading, Haymam |
Flathead Reservation |
Inactive |
No activity observed |
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50 |
7-Jul |
Sumner & Anderson |
Madison River |
Active |
Adults observed by Anderson, no activity on 7/7 |
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51 |
Numerous |
Sumner, Shreading, Haynam |
Flathead River |
Active |
Both adults present--3 young observed |
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52 |
12-Apr |
Sumner |
Flathead Lake |
Active |
Both adults present |
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55 |
4-Apr |
Donofrio |
Bitterroots |
Inactive |
GoEa flew by historic nesting cliff--no PeFa defense |
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58 |
Numerous |
Donofrio |
Bitterroots |
Active |
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