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| Least Tern | ||
Click on the Date to open the record |
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| Year | County | Accepted |
| 1892 | BERKS | No |
| 1990 | ERIE | No |
| 1992 | LANCASTER | No |
| 1993 | MONTGOMERY | No |
| 1994 | PHILADELPHIA | No |
| 1995 | MONTGOMERY | No |
| 1999 | LUZERNE | No |
| 1999 | MONTGOMERY | No |
| 1999 | DAUPHIN | No |
| 2001 | BEDFORD | No |
| 2001 | MERCER | No |
| 2001 | MERCER | No |
| 2013 | ERIE | No |
| 2016 | BUCKS | No |
| 2017 | ERIE | No |
| 2018 | CHESTER | No |
| 2019 | CHESTER | No |
| 2020 | PHILADELPHIA | No |
| 2020 | BUCKS | Yes |
| 2020 | LANCASTER | Yes |
| 2021 | MONTGOMERY | No |