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Table 2. Location and productivity at 61 Peregrine Falcon eyries in Montana, 2005
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Revised 1/10/2006
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Eyrie
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Date(s)
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No.Young
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Number
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Checked
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Observer(s)
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Location
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Fledged
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Remarks
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1
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2-Jul
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Sumner
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Clark Fork River
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2
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Good count, new eyrie location
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2
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Roscoe
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Centennial Valley
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Unk
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Not Checked
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3
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Numerous
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Lockman/Donofrio
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Bitterroot
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2
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Young located 7/29;fledge date 7/15?
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4
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Numerous
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Donofrio
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Bitterroot
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0
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Eyrie has apparently failed
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5
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12-Jul
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Thimons & Felan
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Bitterroot
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1
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Young on ledge
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6
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14-Jul
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Sumner
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Boulder River
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2
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Young have fledged
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7
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18-Jul
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Sumner
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Troy
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Unk
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Moved eyrie, no young visable
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8
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24-Jun
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Sumner
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Livingston
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3
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Young about 28 days old
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9
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4-Jul
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Sumner
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Blackfoot River
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3
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Young have fledged
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10
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Numerous
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Anderson
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Madison River
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Unk
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Probably active eyrie in vacinity
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11
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8-Jul
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Sumner & Gilbert
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Missouri River
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3
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Possibly a 4th young
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12
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Bighorn
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Unk
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Active, but not checked for productivity
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13
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Unknown
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Rogers
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Bighorn
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2
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Reported by Ralph Rogers
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15
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17-Jul
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Sumner
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Clark Fork River
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2
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Young sitting in snag
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16
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Bighorn
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Unk
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Not checked for productivity
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17
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Numerous
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Sumner
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Clark Fork River
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2
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Sumner & Davis saw 2 young on 7/31
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18
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2-Jul
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Sumner
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Clark Fork River
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3
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Young are ready to fledge
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19
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23-Jun
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Sumner & Davis
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Clark Fork River
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2
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Young about 27 days old
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20
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Unknown
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Rogers
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Red Lodge
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2
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Checked by Rogers
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21
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Madison River
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Unk
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Eyrie not checked this year
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22
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Numerous
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Sumner
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Blackfoot River
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0
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Inactive, recheck later July
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23
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Numerous
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Crow/Sumner
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Clarks Fork/Flathead River
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2
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Two fledged young
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24
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5-Jul
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Donofrio
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Bitterroot
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3
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Fledge date estimated 7/7
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25
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12-Jul
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McEneaney
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Yellowstone Park
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2
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Young had fledged
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26
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Bighorn
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Unk
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Unable to check for productivity
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27
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7/5;7/21
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Roscoe, Bockting
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Centennial Valley
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1
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Reported by Jim Roscoe
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28
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7//5
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Sumner
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Flathead Reservation
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3
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Young have fledged
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29
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Numerous
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Donofrio
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Bitterroot
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1
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Young located 7/5, fledge date 7/4
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30
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6/20 -- 6/21
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Sumner & Davis-Sumner
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Clark Fork River
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3
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One young fledged on 6/21.
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31
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8-Jul
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Donofrio
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Bitterroot
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2
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Fledge date estimated 7/9
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32
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3-Jul
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Sumner
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Clark Fork River
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4
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Young have fledged
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33
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Numerous
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Romero/Thimons & Felan
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Bitterroot
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Unk
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Unable to located eyrie site
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34
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17-Jul
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Sumner
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Clark Fork River
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2
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Young have fledged
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35
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2-Jul
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Sumner
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Clark Fork River
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1
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New eyrie location
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36
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Pils & Anderson
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Hebgen Lake
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Unk
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Eyrie active, but no productivity gathered
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37
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20-Jul
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Sumner
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Yellowstone River
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2
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Young have fledged
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38
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7/13;8/12
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Benzel, Roscoe
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Centennial Valley
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0
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Reported by Jim Roscoe
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39
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2-Aug
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Peckham, RRLNWR
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Centennial Valley
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1
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Reported by Jim Roscoe
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40
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23-Jun
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Brad Hall
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Billings
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2
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Young very large
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41
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30-Jun
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Donofrio
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Bitterroot
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3
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Fledge date estimated 7/6
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42
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28-Jun
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Sumner
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Gallatin Canyon
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3
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Young have fledged
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43
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Sumner
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Smith River
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Unk
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Eyrie active, but no productivity gathered
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44
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15-Jul
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Sumner
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Gallatin Canyon
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0
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Eyrie has apparently failed
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45
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20-Jul
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Sumner
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Stillwater River
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4
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One young sitting in eyrie
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46
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East Rosebud
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Unk
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Unable to check for productivity
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47
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1-Jul
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Donofrio
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Bitterroot
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3
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Fledge date estimated 7/4
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48
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7-Jul
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Sumner & Campbell
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Missouri River
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1
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Young have fledged, possibly additional young
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49
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5-Jul
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Sumner
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Flathead Reservation
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2
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Young have fledged
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50
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Madison River
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Unk
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Not Checked
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51
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6/18/--7/3
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Sumner
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Flathead River
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4
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Four young on final check
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52
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7/5/
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Sumner
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Big Fork
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3
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Young have fledged
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55
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Numerous
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Donofrio
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Bitterroot
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0
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Eyrie has apparently failed
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70
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27-Jun
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Sumner
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Boulder River
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3
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Young about 29 days old
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71
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7-Jul
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Pils & Anderson
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Hebgen Lake
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4
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Four young on final check
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72
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