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Table 2 Linear mixed models for the trip energy consumption rate (average ODBA) and trip duration, against chick age and the foraging habitat

From: Time and energy costs of different foraging choices in an avian generalist species

Dependent variableFactorEstimated marginal mean or coefficient ± s.e.χ2(1)P
Average ODBA (g)Chick age−0.002 ± 0.000424.0< 0.001
HabitatTerrestrial0.43 ± 0.01505.9< 0.001
Marine0.63 ± 0.01
Trip duration (h)Chick age50.4< 0.001
HabitatTerrestrial3.93 ± 0.1732.0< 0.001
Marine2.61 ± 0.23
Chick age x habitatTerrestrial0.05 ± 0.018.70.003
Marine−0.04 ± 0.01
  1. Estimated marginal means are the estimated mean for a factor level or a factor level combination. Output of the corresponding analyses of deviance for the significance of the model terms
  2. s.e.,standard error