Fig. 5: The relationship between nestling telomere length (TL) and (a) age-corrected tarsus length and (b) the NAO_30 index (the average NAO index across 30 days prior to TL measurement) with regression lines based on the highest ranked model according to the AICc (Tables 2 and 3). Although there is considerable variation in TLs among individuals of similar size, tarsus length and the NAO_30 index significantly correlate with TL. Males (black) have longer telomeres than females (grey) and individuals in thehigh population (circles, full line) have longer telomeres than those in the low population (triangles, dotted line).
Table 4: Binomial generalized linear mixed models with ∆AICc<5 of variation in first-year survival in house sparrows in two island populations. All models included random intercepts for brood identity and year. The models are ranked by AICc, and number of degrees of freedom (df) and model weights (w) are shown.