Updated: Dec 6, 2020
The robin occurs in Eurasia east to Western Siberia, south to Algeria and on the Atlantic islands as far west as the Azores and Madeira. It is a vagrant in Iceland. In the southeast, it reaches the Caucasus range. Irish and British robins are largely resident but a small minority, usually female, migrate to southern Europe during winter, a few as far as Spain. Scandinavian and Russian robins migrate to Britain and western Europe to escape the harsher winters. These migrants can be recognised by the greyer tone of the upper parts of their bodies and duller orange breast. The European robin prefers spruce woods in northern Europe, contrasting with its preference for parks and gardens in Ireland and Great Britain.
In southern Iberia, habitat segregation of resident and migrant robins occurs, with resident robins remaining in the same woodlands where they bred. You can see and observe it in large numbers ONLY in winter in Thasos