Merle obscur vs Grive à ailes rousses

The most reliable field mark to distinguish the Eyebrowed Thrush from the Dusky Thrush is the presence of a bold white supercilium in the Eyebrowed Thrush, which is less pronounced in the Dusky Thrush. Both species have similar structures, but differences in plumage and facial markings are key.

Look for the bold white supercilium in the Eyebrowed Thrush, which contrasts with the less distinct supercilium of the Dusky Thrush. Check for more uniform brown plumage in the Eyebrowed Thrush versus the mottled appearance of the Dusky Thrush.

The Eyebrowed Thrush has a bold white supercilium and a more uniform brown back, while the Dusky Thrush often shows a more mottled appearance with a less distinct supercilium. The Dusky Thrush may also exhibit more extensive dark streaking on the breast.