Mixing trees and farming in agro-forestry: why the key to resilient farming could be trees. We're looking at this all this week and today we hear from a British pioneer.

A week today millions of people will head to the polls to vote in a number of local council and mayoral elections in England, while voters in Scotland and Wales will elect representatives to their national parliaments.  Farming policy is largely devolved to the governments in Edinburgh and Cardiff, and having heard the latest from the campaign trail in Scotland yesterday, today we turn to Wales.

This Sunday is International Dawn Chorus day. The RSPB is using the occasion to celebrate a rise in the number of young people bird watching, though the British Trust for Ornithology warns that there are fewer birds for them to see and hear.

Presented by Charlotte Smith and produced by Beatrice Fenton.