We want to pick up on a query sent in by our listener Roger Codrai a while ago. Roger is a landscaper with a passion for birding, who tells me he tries to include bird-friendly plant palettes in his designs whenever he can.

Should we be doing it at all? And if we should, are we using the right ingredients? Roger expressed concern about the ingredients in some bird feed products, including inappropriate proteins, as well as artificial colourants and adhesives. To answer his question, we’ve called on Dr Coetzee de Beer, who is a registered avian vet who works at the Centre for Avian, Reptiles and Exotics