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Table.3 Summaries of generalized linear model (GLM) and generalized additive model (GAM) testing the relationship between plumage melanic-based coloration and hemoparasite infection (number of infected erythrocytes) in free-living Feral Pigeons (Columba livia) in urban environments

From: Does melanin-based plumage coloration reflect health status of free-living birds in urban environments?

Coefficient

Est

SE

t-value

P

Sig

Gaussian GLM with identity (AIC = 332.72, ΔAIC = 2.06)

 Intercept

58.14

17.492

3.32

0.002

**

 MBC

0.25

0.460

0.55

0.588

ns

GAM (deviance explained = 13.9%, AIC = 330.66, ΔAIC = 0)

 Intercept

65.77

10.070

6.53

 < 0.001

***

 Smooth term

Edf

Ref. df

F

P

Sig

 Smooth (MBC)

2.05

2.56

1.40

0.336

ns

  1. AIC Akaike’s information criterion, ΔAIC difference between the AICs of the tested model compared to the model with the best fit, Est. estimate, SE standard error, P probability value, Sig. statistical significance, ***P < 0.001, **P < 0.01, ns: P > 0.05, Edf estimated degrees of freedom, Ref. df reference degrees of freedom, F F-statistics
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Avian Research

ISSN: 2053-7166