FIGURE 1 in Variation of plumage patterns, geographic distribution and taxonomy of the Unicolored Blackbird (Aves: Icteridae)

FIGURE 1. Box plot comparisons between measurements of the four subspecies of the Unicolored Blackbird and its possible intergrades. Boxes show the median line and the 25th and 75th percentiles; bars show the full range of variation. Sample sizes are: Agelasticus cyanopus cyanopus (41♂, 38♀), possible intergrades between A. c. cyanopus x A. c. beniensis (3♂, 1♀), A. c. beniensis (19♂, 15♀), A. c. atroolivaceus (10♂, 5♀), possible intergrades between A. c. atroolivaceus and A. c. unicolor (4♂, 4♀) and A. c. unicolor (12♂, 11♀).