Table 5 Male probability of breeding in the year following the one when the GPS was deployed and future reproduction (number of fledglings produced the next year) in relation to its current home range size, age, laying date and brood size.

From: Home range size and habitat quality affect breeding success but not parental investment in barn owl males

Predictors

Probability to breed

Future reproduction

Estimates (SE)

t

p

Estimates (SE)

t

p

(Intercept)

− 1.433 (1.191)

− 1.203

0.229

5.250 (0.423)

12.422

 < 0.001

Age (old)

0.624 (0.576)

1.083

0.279

0.144 (0.507)

0.285

0.776

Laying date

− 0.009 (0.296)

− 0.030

0.976

0.328 (0.245)

1.336

0.181

Home range size

0.412 (0.281)

1.464

0.143

− 0.023 (0.241)

− 0.094

0.925

Brood size

− 0.026 (0.276)

− 0.094

0.925

− 0.159 (0.233)

− 0.683

0.495

  1. All predictors (age, laying date, home range size and brood size) relate to the current reproduction, whereas response variables (probability to breed and future reproduction) to the following year. Results of a generalised linear mixed-effect models with a binomial distribution (probability to breed model) and a linear mixed-effect model (future reproduction model, measured as the number of fledglings produced the next year) with the year of observation and the individual identity set as random intercepts, including respectively 129 and 56 home ranges measured between 2016 and 2019. Standardized estimates (z-transformed) are provided. Significant values are highlighted in bold.
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