Sequence of a family of coots on a stretch of the 21 locks.
A coot chick a few days old swimming on the water demands food, and is given a little bread by a parent bird, which holds on to most of the bread and swims towards the nest.
The nest is in a bed of reeds. There is another adult there, perhaps brooding unhatched eggs.
When the swimming adult reaches the reeds, more chicks appear, and are given a share of the bread.