Males Red-backed Shrike have a grey head and a typical shrike black stripe through the eye.
Females and juveniles do not have the black eye mask of the male and are dull brown.
Juveniles are similar to females but differ by the scaly pattern on the mantle (back).

1st & 2nd photo: Hortobágy National Park, Hungary, 1 May 2019
3rd, 4th & 5th photo: Kiskunság National Park, Hungary, 4 May 2019