Individual quality explains association between plumage colouration, arrival dates and mate acquisition in yellow warblers (Setophaga petechia)

Table 6 Effects of male age, breeding phenology, plumage colour and mate characteristics on reproductive success

	0/1		Count		0/1		Count
	Revelstoke				Inuvik
	Chi	p	Chi	p	Chi	p	Chi	p
Year	2.53	0.28	0.43	0.51	7.06	0.03	0.54	0.76
Clutch initiation	7.71	0.005	0.07	0.79	0.30	0.59	0.02	0.89
Age	0.08	0.77	0.40	0.53	0.10	0.75	0.00	0.99
Tail chroma	0.89	0.35	0.19	0.66	0.24	0.62	0.00	0.97
GC chroma	0.43	0.51	2.45	0.12	2.19	0.14	0.08	0.78
Tail hue	1.59	0.21	1.01	0.31	0.02	0.89	0.05	0.82
GC hue	0.49	0.48	0.05	0.83	0.32	0.57	0.01	0.93
Mate age	0.05	0.83	0.76	0.38	2.47	0.12	0.07	0.79
Mate chroma	1.51	0.22	0.05	0.83	0.10	0.79	0.39	0.53
Mate hue	0.04	0.84	0.32	0.57	0.14	0.71	2.36	0.12

Summary of the effects of basic and alternate plumage colour (tail and greater cover hue and chroma), breeding phenology and mate quality on reproductive success of male yellow warblers breeding in Revelstoke, BC and Inuvik, NWT. The ZAP model simultaneously examines the effect of explanatory variables on the failure/success of individuals (0/1) and the number of young fledged if individuals are successful (Count). Significant terms are indicated in bold.

ISSN: 1472-6785