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Areas of Importance
Ring-Billed Gull (RBGU)
25 Harold Crane WMA
| Year | Mean | Peak | % of GSL Mean |
| 1997 | 0.0 | 0 | 0% |
| 1998 | 21.4 | 151 | 0% |
| 1999 | 23.1 | 100 | 1% |
| 2000 | 19.9 | 127 | 0% |
| 2001 | 14.4 | 57 | 0% |
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| Year | Mean | Peak | % of GSL Mean |
| 1997 | 0.0 | 0 | 0% |
| 1998 | 21.4 | 151 | 0% |
| 1999 | 23.1 | 100 | 1% |
| 2000 | 19.9 | 127 | 0% |
| 2001 | 14.4 | 57 | 0% |
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