When Duncan loses his pet woodlouse, nothing can comfort him. Mum offers him a puppy instead. Dad offers him another woodlouse. Grandma offers him pocket money and Sam a go on his skateboard. None of these can replace Reggie. Just as Duncan thinks he'll never see Reggie again, Mum comes round the corner with her new see-through bag-less hoover. There, looking out towards freedom, is Reggie.
No one can understand why Duncan won't take off his woolly hat in the warm weather. Only Duncan knows the reason: underneath his hat is a bird's egg. At last the hat begins to move. Carefully, Duncan lifts it off his head. There, wriggling about, is a baby sparrow. He'd been hatching the egg in the warmest, safest place he knew – underneath his hat.