2013 Mid-winter Bald Eagle Counts
View counts from: 2015 | 2014 | 2013 | 2012 | 2011 | 2010
Compared % Immatures Change in 
Location Adult Sub-Adult Immature Unknown Total to 2012 of known age percentage
St. Croix River
  In Wisconsin  14 2 16 16 12.5% --
Wisconsin River
  Pettenwell to Ferry Bluff 12 6 1 19 44 33.3% -8.6%
  South of Ferry Bluff 144 85 29 258 215 37.1% -2.9%
Wisconsin River Subtotal 156 0 91 30 277 171 36.8% -4.5%
Rock River/Pecatonica 67 1 27 6 101 2 29.5% -16.0%
Illinois River
  Hennepin & North 8 2 10 -42 20.0% 12.3%
  Henry 20 2 22 6 9.1% 22.2%
  South to Peoria 39 9 27 5 80 -4 48.0% 17.7%
  Peoria to Havana 153 2 85 4 244 63 36.3% 5.2%
  Havana to Beardstown 0 -- 0.0%
  South to Grafton 0 -- 0.0%
Illinois River Subtotal 220 11 116 9 356 4 36.6% 9.5%
Mississippi River 
  Lock & Dam # 2 & 3 32 5 2 39 29 17.9% -42.1%
  Lock & Dam # 4 & 5 22 3 8 33 2 33.3% -5.4%
  Lock & Dam # 5A & 6 2 2 0 0.0% 0.0%
  Lock & Dam # 7 & 8 8 2 2 12 4 20.0% 7.5%
  Lock & Dam # 9 & 10 17 2 1 20 -12 10.5% -5.1%
  Inland 5 1 1 7 -13 28.6% 3.6%
  Lock & Dam # 11 & 12 98 6 15 119 23 17.6% -14.7%
  Sav. Army Depot & Iowa 51 3 16 3 73 10 27.1% -11.0%
  Lock & Dam # 13 125 42 167 19 25.1% 22.0%
  Lock & Dam # 14 67 1 33 101 66 33.7% 19.4%
  Lock & Dam #15 111 4 63 3 181 140 37.6% 20.0%
  Lock & Dam #16 110 35 145 113 24.1% 21.0%
  Lock & Dam # 17 36 12 2 50 -15 25.0% 23.3%
  Inland 2 2 -79 0.0% -24.7%
  Lock & Dam # 18 1578 194 1772 1498 10.9% -0.7%
  Lock & Dam # 19 149 41 1 191 -72 21.6% -8.4%
  Lock & Dam # 20  29 14 65 108 41 32.6% 1.8%
  Lock & Dam # 21 & 22 24 5 10 3 42 -1 38.5% -0.7%
  Lock & Dam # 24 & 25 14 3 17 -9 17.6% -13.2%
  St. Louis and South 12 1 8 1 22 -70 42.9% -2.2%
Miss. River Subtotal 2492 29 501 81 3103 1702 17.5% -5.6%
Tennessee  0 -- -- --
Kentucky 12 2 22 1 37 23 66.7% -4.7%
Missouri River 0 -- -- --
Louisiana 11 6 17 -- 35.3% --
2013 Grand Totals 2972 45 763 127 3907 1935 21.4% -4.7%
2012 Grand Totals  1381 69 419 103 1972 -70 26.1% -8.2%
2011 Grand Totals 1317 72 620 33 2042 475 34.4% 10.3
2010 Grand Totals 1134 56 304 73 1567 -1263 24.1% 2.9%
2009 Grand Totals 2192 97 491 50 2830 -1222 21.2% -2.4%
2008 Grand Totals 3018 96 837 101 4052 228 23.6% 3.9%
2007 Grand Totals 3033 88 656 47 3824 2099 19.7% -3.5%