Figure 2.

Host responses to experimental conspecific brood parasitism (CP) measured as (a) egg rejection and (b) latency to egg rejection. Responses to CP were compared between “CZ” (Czech Republic) and “NZ” (New Zealand) with low and high breeding densities, respectively; see hypotheses (ii) and (iii) in Introduction. Latencies to ejection (black) and to rejection (i.e., including desertion; grey) are presented as the raw data’s means ± SE. Sample sizes (nests) are given inside bars (a) or above x-axis (b).