| Winter tetrad progress |
| Priority | No. of tetrads |
No. needed for minimum coverage (min-8-rule) |
Total no. TTVs (2 visits) |
Total no. TTVs (only 1 visit) |
No. using min-8-rule (1+ visits) |
% of target (1+ visits) |
|---|---|---|---|---|---|---|
| High (tetrads on land) | 525 | 168 | 153 | 24 | 167 | 99% |
| Medium (chequerboard low priority) | 500 | 160 | 28 | 17 | 44 | 28% |
| Breeding season tetrad progress |
| Priority | No. of tetrads |
No. needed for minimum coverage (min-8-rule) |
Total no. TTVs (2 visits) |
Total no. TTVs (only 1 visit) |
No. using min-8-rule (1+ visits) |
% of target (1+ visits) |
|---|---|---|---|---|---|---|
| High (tetrads on land) | 525 | 168 | 169 | 3 | 168 | 100% |
| Medium (chequerboard low priority) | 500 | 160 | 41 | 9 | 39 | 24% |
|
|
|
|
Results generated by SAS® software |
![]() |
|
birdatlas@bto.org |
|