Bird Food packaging

Hi.

I regularly buy bird feed from the RSPB online shop and RSPB reserves as I like to support in many ways. But does anyone know if the food packaging is environmentally friendly? Many of the smaller bags are plastic and I'm not sure if they are made of recycled material or if they are recyclable. It would seem to me that the RSPB should follow this path as they are involved in so many campaigns that are to do with a diverse eco-system.

Does anyone know?