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Table 2 Model selection for the LMMs investigating the effects of sex and age-class on for the three Principle Components (PC1-PC3)

From: Raven food calls indicate sender’s age and sex

Models

AICc

Δi

Relative likelihood

Akaike weight

PC1

 Sex + Age-class

614.59

4.80

0.091

0.053

Sex

611.67

1.89

0.388

0.227

 Age-class

612.69

2.91

0.234

0.137

Null

609.78

0.00

1.000

0.584

PC2

Sex + Age-class

637.81

1.69

0.429

0.300

 Sex

652.81

16.69

0.000

0.000

Age-class

636.12

0.00

1.000

0.699

 Null

650.96

14.84

0.001

0.000

PC3

Sex + Age-class

1076.32

1.04

0.595

0.373

 Sex

1116.96

41.68

0.000

0.000

Age-class

1075.29

0.00

1.000

0.627

 Null

1118.62

43.34

0.000

0.000

  1. Corrected Akaike Information Criterion (AICc) values, their differences (Δi), the relative likelihood, and the resulting Akaike weights are shown for each model. Models with highest support (Δi 2) are indicated in bold type