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Table 1 Factors that might influence the egg’s fresh mass in the Grey-backed Shrike

From: The Grey-backed Shrike parents adopt brood survival strategy in both the egg and nestling phases

Generalized linear mixed model parameters
Fixed effects β ± SE n t P
Intercept 4.274 ± 0.094 151 45.618  < 0.001
Clutch initiation date – 0.002 ± 0.003 151 – 0.555 0.580
Laying sequence 0.058 ± 0.016 151 3.697  < 0.001
Random effects β ± SD n Results of VCA (%)
Nest identity 0.097 ± 0.311 151 66.90
Years 0.001 ± 0.001 151 0.69
Residual 0.047 ± 0.217 151 32.41
  1. SE of fixed effects is the standard error of the mean; SD of random effects is the square root of the variance. The explanations apply also to Table 2, 3 and 4