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Table IV.
Number of wild waterbirds sampled around Lake Constance by the different methods used for AI surveillance of wild waterbirds from September 2006 to August 2007. (D/G/M = diving ducks, grebes and mergansers).
| September–April |
May–August |
Total for year (all bird groups) | |||||
|---|---|---|---|---|---|---|---|
| Swan | D/G/M | Other | Swan | D/G/M | Other | ||
| Found dead | 19 | 12 | 35 | 8 | 6 | 52 | 132 |
| Trap | 5 | 36 | 23 | 3 | 10 | 68 | 145 |
| Hunt | 47 | 10 | 93 | 0 | 0 | 0 | 150 |
| Swan Catch | 93 | 0 | 3 | 221 | 0 | 0 | 317 |
| Bycatch | 0 | 11 | 11 | 0 | 0 | 1 | 23 |