Lodgers

So how much does a sparrow weigh then? I only ask because the ones that are nesting in the loft and running up and down the eaves sound like they weigh at least 5 kilos each.

Since our house suffers from the ailment of all post 1990 houses (limited loft boarding, rafters only 4ft high and 3ft apart) I can't even begin to think about how I could encourage them to find a nice home in a tree and leave my loft insulation where it should be. I can definitely see something poking out of the hole in the brickwork where they fly in and out.

Answers on a postcard please...