Gather the group somewhere with plenty of bird activity, such as a park, woodland, meadow or waterside.
Gather the group and explain that they will be trying to feel the rings of sound spreading out from a drum somewhere in the landscape.
As you move through a natural space using a stalking gait such as the heron, weasel or wild cat, choose moments to suddenly stop and hold completely still, as if you have sensed danger.
Position the group some distance from a hedgerow, far enough that watching from there does not disturb the birds along it.
Mark out an area about fifty metres by fifty metres next to a trail, ideally woodland with good undergrowth and cover.
Before learning the language of the birds, practise on an animal you already live with.
Choose a patch of habitat with good bird activity, such as a hedgerow, a scrubby field corner or a woodland edge.
Settle quietly in a garden, park or hedgerow where birds are active, and give the area ten minutes to return to its normal baseline.
Choose a habitat that would suit owls, such as a woodland or park with mature trees.
Find a spot beside a path used by dog walkers, where you can sit out of the way with a view of the hedges and trees on either side.