Table 4 Dietary niche overlap among the three swan species in 20 February – 20 March and 21 March – 28 April. *represents P < 0.05
From: Ecological and phylogenetic aspects of the spring diet of three palaearctic species of swans
Species | Observed niche overlap index | P (Obs < = null) | P (Obs > = null) |
|---|---|---|---|
20 February – 20 March | |||
Mute Swan—Whooper Swan | 0.987 | 0.001* | 0.999 |
21 March – 28 April | |||
Mute Swan—Whooper Swan | 0.344 | 0.969 | 0.031* |
Mute Swan – Bewick’s Swan | 0.883 | 0.999 | 0.001* |
Whooper Swan – Bewick’s Swan | 0.384 | 0.973 | 0.027* |