Fig. 3
Correlation between egg-spot matching (between cuckoo and warbler eggs) in parasitized nests and availability of host nests, synchronized with cuckoo egg-laying. The data represent spot contrasts. The solid and dashed lines show linear regressions and their 95% confidence intervals, respectively. Only results for the one-egg assessment are presented. Data from the whole clutch assessment yielded the same conclusion and are shown as supplementary materials