Removed ' towards their goal'. My recollection is that they did proceed somewhat erratically. I've added some more to the kingfisher part.
Beech trees lean artistically
towards sound of water
Where the river’s running fast:
It doesn’t know how far it’s got to go…
Ducks convening for an evening out
nose around the stones and weeds
Canoeists stroke haphazardly downstream
Or drift like slices of ripe fruit.
Now, if you’re patient
and very lucky
you will see
the lightning orange
and the electric blue
the zipping flight
and great stillness
of the kingfisher.