Disclaimer: Supplementary materials have been peer-reviewed but not copyedited.


S1: Data table for Figure 1

S2: Distribution of data for Figure 3

S3: Data table and references for Figures 3 & 4

Table S1. Changes in cuckoo and reed warbler populations (from cuckoo egg observations and standardized nest searching effort), parasitism rate (proportion of all nests found that contained cuckoo eggs), and expression of hosts’ first line of defense (mobbing an adult cuckoo) at Wicken Fen, Cambridgeshire, U.K., from 1985 to 2012.

Figure S2. Distribution of parasitism rates during laying in each year we conducted experiments testing (a) mobbing responses and (b) rejection of nonmimetic eggs at reed warbler nests.

Table S3. Parasitism rates and proportion of hosts who (a) mob taxidermy adult cuckoo models or (b) reject non-mimetic eggs in other reed warbler populations across Europe.

References for Table S3

Please note: Wiley Blackwell is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.