Chestnut-bellied Rock Thrush
Monticola rufiventris
The chestnut-bellied rock thrush is 21–23 cm (8.3–9.1 in) in overall length and weighs 48–61 g (1.7–2.2 oz). The male has a blue-grey crown and upperparts with darker lores and throat. The undersides are deep chestnut. The female has dull grey-brown upperparts and scalloped slate-grey with buffy-white underparts. The eyering and the post-auricular patch are whitish-buff.
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: Chestnut-bellied Rock Thrush and Common Rock Thrush.