Un niño muy movido

Movida is a participle form of the verb mover ("to move"), and it has an entry of its own in the María Moliner, from which I translate here: applies to a photograph in which the figures are blurred (confusas) on account of having moved during the exposure; applies to an active and restless person (un niño muy movido). The Moliner provides some secondary, and foreign, definitions as well: an egg preparation in Chile; a child skeletally deformed from birth in Guatemala and Honduras.