Obviously it isn't showing its crest/tuft, probably because it was having a bath.
This is the first time I can recall getting photos of a titmouse at the pond.
Tufted Titmice hoard food in fall and winter, a behavior they share with many of their relatives, including the chickadees and tits. Titmice take advantage of a bird feeder’s bounty by storing many of the seeds they get. Usually, the storage sites are within 130 feet of the feeder. The birds take only one seed per trip and usually shell the seeds before hiding them.