Figure 2

Relationship between the occurrence of successful breeding pairs and the distance to the nearest sports pitch based on generalised linear model with binomial error structure (p < 0.05). Successful breeding pairs (N = 14, dark blue) vs. random sites (N = 12, light blue) formed the two categories of the response variable, Regression slope (± 95% confidence interval = CI) fitted based on the GLM output y = 1/(1 + exp − (− 1.144 − 7.49 × distance to sports pitch)), for more details see Table 2a.