Collins Bird Guide: The Most Complete Guide to the Birds of Britain and Europe Paperback – 4 March 2010

Too good as reference 👌For Indian continent also.

This is a a very very good book which has pointers on images for id'ing a particular bird so that its easy to see a bird image and see the id pointers. Worth the money. Complements Grimmett.Additional feedback: Suggest going for hardcover over paperback. The print is a bit small in paperback.

I used this for birding in Turkey. Found it very comprehensive