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Table 1 Habitat differences between buildings chosen at random ( N= 240) and nest sites ( N= 195) on buildings shown with a GLM with binomial error structure (random point = 0, nest site = 1) and a logit link function

From: Hard times in the city – attractive nest sites but insufficient food supply lead to low reproduction rates in a bird of prey

Variable Estimate SE T-value P-value Sign.
Intercept −3.11 0.70 −4.46 < 0.0001 ***
Roof-openings [open = 1, closed = 0] 4.12 0.50 8.29 < 0.0001 ***
Façade [smooth = 0, not smooth = 1] −0.46 0.26 −1.79 0.07
Nest height/Height of the attic [m] 0.29 0.10 3.22 0.002 **
Green courtyard [yes = 1, no = 0] 0.88 0.27 3.33 <0.001 ***
  1. Significance codes: ‘***’ 0.001, ‘**’ 0.01, ‘•’ <0.1.