The lesser spotted woodpecker (Dryobates minor)
In the photo you can see the usual "place of work" of this little woodpecker.
He is a frequent participant of the so-called "mixed bird flock". In it, he periodically glances at other species of birds in order to keep up with the flock.
Look how cleverly and quickly he climbs a branch!
He peck a thin bark on the branches, and searches for insects hiding under it.
Sexual dimorphism is expressed in the absence of a red cap in females.