Figure 2 . Overlapping geographic assignments for migrant (a, c)
and resident (b, d) juncos based on isotopic composition of feathers in
yellow (a, b) and claws in blue (c, d), representing regions of high
probability (top 10%) for breeding and overwintering location,
respectively. Seasonal ranges for Junco hyemalis (IUCN, 2019) are
shown in light gray underneath origination estimates. Hydrogen isotopic
values for individual feathers (e) and claws (g) were used to estimate
the corresponding median latitudes (f, h) at which those tissues were
formed, with asterisks indicating significant differences between
resident and migrant juncos.