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| Moult limit in the underwing coverts of a Common Grackle enabling us to age this as a second year bird | |
| Total images: 96 | Last update: 03/04/10 15:26 | Help | |
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| Moult limit in the underwing coverts of a Common Grackle enabling us to age this as a second year bird | |
| Total images: 96 | Last update: 03/04/10 15:26 | Help | |