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

Table.2 Parameters of generalized linear models (Gaussian fit and identity link) testing the effects of body morphometric measurements of the Feral Pigeon (Columba livia) on the variation of plumage melanic-based coloration (MBC) at urban environments of Algeria

Model	AIC	R²	F-value	P-value	Sig.
MBC ~ Body weight	260.87	0.0986	10.50	0.003	**
MBC ~ Tail length	264.77	0.1713	5.78	0.023	*
MBC ~ Total length	265.81	0.1423	4.63	0.040	*
MBC ~ Bill height	266.89	0.0796	3.47	0.073	ns
MBC ~ Bill length	267.97	0.0635	2.36	0.136	ns
MBC ~ Length of primary feather	268.30	0.0326	2.03	0.165	ns
MBC ~ Bill breadth	269.43	0.0525	0.92	0.347	ns
MBC ~ Stretched wing	269.71	0.0171	0.66	0.425	ns
MBC ~ Culmen	269.92	0.0119	0.45	0.507	ns
MBC ~ Folded wing	270.02	0.0084	0.36	0.554	ns
MBC ~ Length of toes	270.28	0.0033	0.11	0.743	ns
MBC ~ Tarsometatarsus	270.33	0.0006	0.07	0.794	ns

AIC Akaike’s information criterion, R²: Nagelkerke pseudo R-squared, AIC and R² are used as measures of the goodness-of-fit of each model, F- and P-values are results of Type-III test ANOVA applied to each GLM, Sig.: statistical significance, **P < 0.01, *P ≤ 0.05, ns: P > 0.05)

ISSN: 2053-7166