Blue-capped Rock Thrush
Monticola cinclorhyncha
The male has a blue head, chin and throat. The upper parts are blue and black. The rump and underparts are chestnut brown. There is a white patch on the wing that is visible during flight. The female bird is brown with a brown and white underside.
ID text from Wikipedia, CC BY-SA 4.0
Common Rock Thrush
Monticola saxatilis
This is a medium-sized but stocky thrush 17–20 cm in length. The summer male is unmistakable, with a blue-grey head, orange underparts and outer tail feathers, dark brown wings and white back. Females and immatures are much less striking, with dark brown scaly upperparts, and paler brown scaly underparts. The outer tail feathers are reddish, like the male.
ID text from Wikipedia, CC BY-SA 4.0

Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Blue-capped Rock Thrush and Common Rock Thrush.