Below is a table with some information derived from the count data we have collected since 1974. It shows the percentage of each species spotted in each of the four normal count months; the earliest, latest and peak of migration dates; and an average yearly count for three time periods (1974 - 1983, 1984 - 1993, and 1994 - 2003), which includes data from Sept. 12 - Sept. 28 of each year. The old counts were only conducted during a two-week span in mid-September, so I have only used data from that time span on all count years to give a better comparison.
Go here for complete yearly total for each species.
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This section only includes data collected from Sept. 12 through Sept. 28 of each year, since the older counts were usually limited to this time span. |
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Species |
|
Yearly Average |
Yearly Average for |
Yearly Average for |
||||||
|
August |
September |
October |
November |
Earliest Sighting |
Latest Sighting |
Peak of Migration |
1974 thru 1983 |
1984 thru 1993 |
1994 thru |
|
|
Osprey |
2.5 % |
91 % |
6.5 % |
0 % |
Aug. 17 |
Oct. 20* |
Sept. 18 |
17 |
25 |
33 |
|
Bald Eagle |
1.7 % |
72.5 % |
21.5 % |
4.3 % |
Aug. 21 |
Nov. 24 |
Sept. 19 |
0.6 |
1.4 |
12 |
|
Golden Eagle |
0 % |
39.25 % |
22.5 % |
37.25 % |
Sept. 4 |
Dec. 4 |
Oct. 13 |
0.25 |
0.85 |
2.4 |
|
Harrier |
2 % |
74 % |
19 % |
5 % |
Aug. 26 |
Nov. 24 |
Sept. 20 |
3.75 |
6 |
5.5 |
|
Sharpie |
0.7 % |
57 % |
41 % |
0.6 % |
Aug. 11 |
Dec. 13 |
Oct. 2 |
104 |
141 |
103 |
|
Cooper |
0.6 % |
56 % |
42 % |
1.4 % |
Aug. 19 |
Dec. 13 |
Sept. 28 |
15 |
29 |
40 |
|
Red-shouldered |
1 % |
64 % |
27 % |
8 % |
Aug. 31 |
Nov. 24 |
Sept. 26 |
1.75 |
1.85 |
3.6 |
|
Broad-winged |
0.1 % |
99.6 % |
0.3 % |
0 % |
Aug. 5 |
Oct. 19 |
Sept. 20 |
5552 |
3566 |
2806 |
|
Red-tailed |
1.2 % |
28 % |
39 % |
31.5 % |
Aug. 20 |
Dec. 11 |
Oct. 10 |
9 |
8 |
24 |
|
Kestrel |
1 % |
80 % |
18.5 % |
0.5 % |
Aug. 12 |
Dec. 11 |
Sept. 24 |
22 |
42 |
32.5 |
|
Merlin |
0 % |
68.5 % |
26 % |
5.5 % |
Sept. 1 |
Nov. 9 |
Sept. 24 |
0 |
0.7 |
2.3 |
|
Peregrine |
0 % |
65 % |
31 % |
4 % |
Sept. 4 |
Nov. 5 |
Sept. 27 |
0 |
0.3 |
2.9 |
* Unusual late sighting of two birds on Nov. 15, 1996