Moving around on the pond and from the sides

Moving around on the pond and from the sides

Observation - Moving around on the pond and from the sides. Description: These small white things, seen from a distance of 20 yards, have been seen moving on the pond and from the side of the pond. Maximum 2 at a time, nil seen on the pond edges but obscured by bushes/grasses. Lot of ducklings going missing recently, no other

These small white things, seen from a distance of 20 yards, have been seen moving on the pond and from the side of the pond. Maximum 2 at a time, nil seen on the pond edges but obscured by bushes/grasses. Lot of ducklings going missing recently, no other birds on the pond, not fished, not fed by a strongly running stream,@ 50 yd x 20yd size.