What visual cue is a common identifying feature of the Eastern Phoebe, even when it is simply waiting on a perch?
Answer
Its characteristic tail-wagging motion
The tail bob or tail-wagging motion is a characteristic visual cue common to the species, present even when they are perched waiting for a meal.

Related Questions
To which bird family does the Eastern Phoebe belong?What is the specific term for the Eastern Phoebe's hunting maneuver of darting out from a perch to capture prey?What type of insects form the most significant portion of the Eastern Phoebe's diet, especially during nesting season?After successfully catching prey in mid-air, where does the phoebe typically return?What potentially dangerous prey item has the Eastern Phoebe been documented consuming?What method is highly probable for a phoebe to use to neutralize a wasp's stinger after capture?How does the phoebe's diet change when autumn approaches and aerial insects decline?What visual cue is a common identifying feature of the Eastern Phoebe, even when it is simply waiting on a perch?Where does the Eastern Phoebe tend to concentrate its foraging activity?How does the phoebe's method of finding food differ from that of sparrows or finches?