It's a bit early yet, but there's a lot of activity in our garden amongst, the blackbirds, robins, dunnocks and blue tits. But at this time of year we start "saving up." An ideal lining material for birds nests is the lint generated and deposited on the filter of our tumble dryer. After each use it's easy to remove with a damp finger. We add it to the pile and we'll put it out later. It's always in demand.