Grey-Crested Tit.....It is mostly found in the forest of oak and rhododendron.
The restless bird was photographed during the trip to Chelela Pass (3988 metre from msl), Bhutan on 3rd June, 2019. This cute bird has size in between only 11-13 cm. Five subspecies are recognized in India and China.
I think that it is one of beautiful and adorable Tits, found in India. I have posted a close-up posture here.
Nikon D500, Nikkor 200-500 mm
500 mm, f/7.1, 1/500s, iso 2500