Three subspecies usually are recognized:
T. i. frantzii- The crown and nape are bright yellow; the indistinct (partially concealed) band across the nape is pale greenish blue. The foreneck and throat is paler than the other two subspecies (Wetmore et al. 1984). Costa Rica and western Panama (east to eastern Veraguas).
T. i. oresbia- This has the darkest coloration of the three subspecies. There is a greenish-blue band on the neck and the foreneck and throat are darker than the others. Females have dark green edging on the back feather rather than the yellow seen in the other two subspecies (Wetmore et al. 1984). Central Panama (provinces of Coclé and Panamá).
T. i. icterocephala- This subspecies is most similar to T. i. frantzii in coloration, but it is a duller yellow. The band across the nape is a deeper blue and the foreneck and throat are slightly darker than T. i. frantzii (Wetmore et al. 1984). Eastern Panama (eastern Darién) south to extreme northwestern Peru (Tumbes).