My boxer's holistic diet, costs me a fortune but, because I totally believe in the theory and proven results of it, I am more than willing to pay it. As long as the birds are able to access food, they are hardy little creatures, and eat to live, it is not imperative that they are absorbing the nutrients and vitamins, we are told, this more expensive seed contains. How many people are prepared to pay £32.29 inclusive of postage for wild bird seed, when it can be bought at B+Q, same size for a tenner. I am extremely pro the environment, and animal welfare/rights; I feel I am adhering to my principles. by ensuring the birds are being fed.