Siberian Blue Robin vs Red-flanked Bluetail

In short

The Siberian Blue Robin and the Red-flanked Bluetail are both small, blue-toned birds from the Old World Flycatchers family. The most reliable field mark is the presence of a distinct orange flank on the Red-flanked Bluetail, absent in the Siberian Blue Robin. Both species can be found in similar habitats, but their behavior and vocalizations offer additional clues for identification.

Identification tips

1. Look for the orange flanks on the Red-flanked Bluetail, especially in males. 2. Note the white throat on the Red-flanked Bluetail. 3. Observe behavior: Red-flanked Bluetail may perch more conspicuously. 4. Listen for song differences: Red-flanked Bluetail has a more varied and musical song compared to the Siberian Blue Robin's high-pitched notes.

Size

Both species are similar in size, small and compact, typical of Old World flycatchers.

Plumage

The Siberian Blue Robin is characterized by a deep blue coloration in males, with females being more brownish. The Red-flanked Bluetail also has a blue back in males but is distinguished by its orange flanks and a white throat. Females of both species are more subdued in color but the bluetail's orange flanks remain a key identifier.

Behaviour

Both species are often seen foraging on the ground or low in the understory, but the Red-flanked Bluetail may be more likely to perch conspicuously.

Habitat

Both species inhabit dense forests and thickets, often near water, during breeding season. They can overlap in range during migration.

Voice

The Siberian Blue Robin's song is a series of high-pitched, thin notes, while the Red-flanked Bluetail has a more varied and musical song. Calls may be difficult to distinguish in the field.