Willow tit or marsh tit?

Willow tit or marsh tit?

Observation - Willow tit or marsh tit? - Global. Description: the fluff balls were just hopping from branch to branch squeaking, while the parents were collecting something (insects?) from the branches and leaves and feeding them. The location was trees by the river side.

the fluff balls were just hopping from branch to branch squeaking, while the parents were collecting something (insects?) from the branches and leaves and feeding them. The location was trees by the river side.