Fig. 2
From: Factors underlying migratory timing of a seasonally migrating bird
(A) Predicted breeding locations of each captured migrant. Lines are drawn between the capture location and the location with the highest probability of breeding as calculated by OriGen (note that this single point is not what is used in analyses). Line color shows population assignment by rubius. (B) Time series of the proportion of migrants through each capture site, separated by week and population. At both the Louisiana (top) and Texas (bottom) capture sites, the Atlantic population showed peak migration roughly two weeks earlier than the Midwest population’s peak. Western individuals are not included in the Louisiana chart due to low sample size. (C) Spring onset dates across the ranges of each respective population, with mean spring onset indicated by dotted vertical line. The breeding ranges of the Atlantic and Midwest populations experience nearly identical spring onset, while spring arrives much later across the Western breeding range.
