Grey-streaked Flycatcher vs Mourning Warbler

In short

The Grey-streaked Flycatcher and the Mourning Warbler are distinct in appearance and behavior, with the former being a small, slender flycatcher and the latter a more robust warbler. Key differences include plumage patterns and habitat preferences, which are crucial for identification in the field.

Identification tips

• Plumage: Look for the Grey-streaked Flycatcher's streaked breast and faint eye-ring versus the Mourning Warbler's olive back and yellow belly.
• Behavior: Note the flycatcher's perching and sallying behavior compared to the warbler's skulking in dense undergrowth.
• Habitat: Consider the habitat; flycatchers in open areas, warblers in dense shrubs.
• Vocalization: Listen for the flycatcher's simple call versus the warbler's rich song.

Size

The Grey-streaked Flycatcher is generally more slender and slightly smaller compared to the more robust Mourning Warbler.

Plumage

The Grey-streaked Flycatcher has a greyish-brown plumage with distinctive streaking on the breast and a faint eye-ring. In contrast, the Mourning Warbler features a more uniform olive-green back with a yellow belly and a distinctive grey hood in males, lacking the streaking seen in the flycatcher.

Behaviour

Grey-streaked Flycatchers often perch conspicuously and sally out to catch insects, while Mourning Warblers are more secretive, typically foraging low in dense undergrowth.

Habitat

Grey-streaked Flycatchers are often found in open woodlands and forest edges, whereas Mourning Warblers prefer dense, shrubby habitats, especially during breeding season.

Voice

The Grey-streaked Flycatcher has a simple, high-pitched call, while the Mourning Warbler's song is a rich, rolling series of notes. These vocal differences are useful for identification.