Supplementary material for the manuscript "Flexibility in the timing of avian egg-laying in relation to climate"

· Appendix S1 – Names of institutions and persons associated with the collection or maintenance of breeding observations. · Appendix S2 – Table of 146,009 occurrence records which includes the biome, observed 30-day T_min, T_max, and precipitation, and 2-year average T_min, T_max, and precipitation. · Appendix S3 – Species level climatic averages and results from paired <i>t</i>-tests.

· 附录S1：与繁殖观测数据的收集或维护相关的机构及人员名录
· 附录S2：包含146009条出现记录的表格，涵盖生物群系（biome）、观测所得的30日最低温（T_min）、最高温（T_max）与降水量，以及两年期平均最低温、最高温和降水量
· 附录S3：物种水平的气候平均值以及配对t检验（paired t-test）结果