Species specific first day of 3-week period used for climate variables based on greatest correlation to each of three response variables.

Spring Temp = mean temperature at breeding initiation. Only dates for variables included in analyses are presented. The three response variables are the interval in days between spring arrival and juvenile appearance (10% quantile for both; "Arrival-Juvenile Appearance" the interval between arrival and breeding initiation as indicated by female breeding condition ("Arrival-Breeding"), and the interval between breeding initiation and juvenile appearance ("Breeding-Juvenile Appearance").