Least Flycatcher vs Grey Flycatcher

In short

The tail wagging behavior is the most reliable field mark to distinguish these two flycatchers: the Grey Flycatcher wags its tail in a gentle downward motion, unlike the Least Flycatcher. Both species are small Empidonax flycatchers, but their behaviors and habitats can help separate them.

Identification tips

• Look for the Grey Flycatcher's gentle downward tail wagging, which is unique among flycatchers.
• Observe the habitat: Least Flycatchers are typically in clustered territories in forests, while Grey Flycatchers are found in more remote areas.

Behaviour

The Grey Flycatcher is known for its distinctive tail wagging in a gentle downward motion, similar to a slowed-down phoebe. The Least Flycatcher does not display this behavior.

Habitat

The Least Flycatcher breeds in deciduous or mixed forests and is often found in dense clusters. The Grey Flycatcher prefers more remote and sparsely populated areas.