What is the distinct, sneezy song often rendered for the Willow Flycatcher?

Answer

fitz-bew

The Willow Flycatcher's presence is most reliably announced by its distinct vocalization, which is characterized as a sneezy song. This specific sound is frequently transcribed or rendered by ornithologists and birdwatchers as the phrase *fitz-bew*. This auditory cue is crucial because the bird's visual appearance is so similar to its close relative, the Alder Flycatcher, making the song the primary reliable identifier for field observation when visual confirmation is difficult or impossible.

What is the distinct, sneezy song often rendered for the Willow Flycatcher?
birdcharacteristicphysicalFlycatcher