He flits amongst the reeds then his black claws cling on. A fringe of tiny white feathers shows on his body.
Photographing them pecking up grit is the classic. It's harder to find them in the reeds and that sometimes has them at odd angles with a reed between the moustachios. And I like the quirky angle and stance. Sometimes legs akimbo as the bird clings to a reed at either side of its body.
Below, a swan lake sequence.