and now hybrid tit

I present tits picture taken in the area beyond the Urals Chelyabinsk. In the picture we see a similar tit for blue tit , but the closer you look, you can see the difference in plumage. Photographer Ivan Czernatkin who took this picture, it states that it is a hybrid blue tit (Cyanistes caeruleus) and azure tit (Cyanistes cyanus). The latter is common in this area. I put three photographs for comparison: blue tit, azure tit and hybrid.

                azure tit                                       blue tit                               hybrid tit