Long-legged Buzzards from the Balkan and Russia are mostly migratory and spend the winter in northern Afrika or in the Sahel. Some birds spend the winter in Hungary or Greece. Sometimes Long-legged Buzzards are seen farther in the west, for example in Austria and Germany.
A map on Wikipedia shows that the ones found in India are in a mixed range, some are winter migrants and some are part of the permanent range.
Till very recently I did not know about the sub-species of Black Redstart. The sub-species we get is Phoenicurus ochruros rufiventris. Seen in Turkmenistan eastwards through Pamir and Alay Mountains to Himalaya and is a widespread winter visitor to the rest of Indian plians
The Oriental White-eye, Zosterops palpebrosus, is a small passerine bird. They are easily identified by the distinctive white eye-ring and overall yellowish upperparts. Several populations of this widespread species are named subspecies and some have distinctive variations in the extent and shades of yellows in their plumage.About eleven subspecies are well recognized.