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Fig. 5 | Avian Research

Fig. 5

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

Fig. 5

Relationship between melanic-based coloration and cellular immune response (a number of monocytes, b number of granulocytes) in the Feral Pigeon (Columba livia) living in urban environments of Algeria. The dashed red line is a linear regression with a Poisson GLM fit, with 95% confidence region in light grey. The blue solid line represents the predicted curve from a generalized additive model (GAM) with Poisson error distribution. Solid white circles within side boxplots indicate the average (sample size = 30 individuals)

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Avian Research

ISSN: 2053-7166