Birds, feeders and the garden

My Dad loves feeding birds. He spends a lot of money every winter buying enormous bags of bird seed. And the birds love him, too. He has quite a few visiting his feeders for most of the year (he stops feeding them in May and starts up again in September). He loves to look after them, providing cover for them to hide in by planting bushes and native plants, and going out to shovel areas for the ground feeders if the weather is bad. It gives him a sense of purpose.

However.