Song thrush "Turdus", is the Latin for "thrush", and the specific epithet refers to a character in Greek mythology, Philomela, who had her tongue cut out, but was changed into a singing bird. Her name is derived from the Ancient Greek "Φιλο" "philo-" ("loving"), and "μέλος" "melos" ("song"). The dialect names "throstle" and "mavis" both mean "thrush", being related to the German "drossel" and French "mauvis" respectively. "Throstle" dates back to at least the fourteenth century and was used by Chaucer in the "Parliament of Fowls". Mavis is derived via Middle English "mavys" and Old French "mauvis" from Middle Breton "milhuyt" meaning
Bicknell's thrush of lower mandible is yellow colored, while tip of lower mandible and upper mandible is blackish. They average slightly smaller than the very similar gray-cheeked thrush but are all but indistinguishable in outward appearance. Together, gray-cheeked and Bicknell's thrush form a cryptic species pair, and were indeed formerly considered conspecific. The song is a jumbled series of flute-like tones ending on a higher note. Member of the Turdidae family, the Bicknell’s thrush belongs to the "Catharus"genus. This genus includes twelve species, five of which are found in North America. The closest relative of the Bicknell’s thrush is its sister species,