Those images are over-exposed and are very misleading Pavel- see
2cy Taiga looks like an adult male following pre-breeding moult, Feb-Apr. The Flamborough can bird be aged by the retained juvenile greater covers with pale tips.
The OP is a 2cy RBF which has, in this instance, a paler washed orange chin and throat, lacking the broad grey breast band. Note also the upper tail coverts of the OP are not jet black; in Taiga they are always black, contrasting with the tail. Your bird has the pale tips to the greater coverts worn off but the inner three (?) appear slightly longer and so, possibly (replaced) adult feathers, though difficult to be certain without better quality images. The vast majority of 2cy RBF's cannot be sexed.
RBF's do not attain adult plumage until 3cy. For in depth ageing and sexing- see
https://ringersdigiguide.ottenby.se/species/ficedula-parva/
Grahame