What characteristic notes typically bookend the White-eyed Vireo's rapid, energetic song?

Answer

Short, sharp chip notes at the beginning and end

The male White-eyed Vireo utilizes a loud, expressive song for territorial declaration and mate attraction, characterized by its rapid and energetic delivery, frequently described as a nasally jumble of notes. A common representation of this tune is phrased as 'Quick, give me a rain check!' or transcribed as 'chip-a-wheeoo-chip.' Structurally, this complex vocalization is consistently framed by specific introductory and concluding sounds. Regardless of the exact middle phrasing captured by observers, the entire song performance is typically bookended by short, sharp chip notes appearing both at the start and the finish of the vocal sequence.

What characteristic notes typically bookend the White-eyed Vireo's rapid, energetic song?
speciesbirdanimalfactvireo