Table 1 The number of samples collected in different years and time periods within a year
From: Ecological and phylogenetic aspects of the spring diet of three palaearctic species of swans
Time periods | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | Total |
|---|---|---|---|---|---|---|---|
Mute Swan | |||||||
20 February – 20 March | 2 | 8 | 6 | 0 | 0 | 0 | 16 |
21 March – 28 April | 12 | 12 | 6 | 0 | 0 | 0 | 30 |
Total | 14 | 20 | 12 | 0 | 0 | 0 | 46 |
Bewick’s Swan | |||||||
20 February – 20 March | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
21 March – 28 April | 0 | 12 | 3 | 3 | 0 | 12 | 30 |
Total | 0 | 12 | 3 | 3 | 0 | 12 | 30 |
Whooper Swan | |||||||
20 February – 20 March | 2 | 10 | 4 | 0 | 0 | 0 | 16 |
21 March – 28 April | 0 | 8 | 7 | 1 | 5 | 9 | 30 |
Total | 2 | 18 | 11 | 1 | 5 | 9 | 46 |