Relationships
Some authorities (including the Sibley-Monroe checklist) place some other genera in the family Bombycillidae along with the waxwings. Birds that are sometimes classified in this way include the silky-flycatchers, the Hypocolius, and the Palm Chat. Recent molecular analyses have corroborated their affinity and identified them as a clade, identifying the Yellow-flanked Whistler as another member.
Read more about this topic: Waxwing