Five years ago, we were standing outside in my back garden hoping to see the fly-past of the International Space Station (ISS) - it did appear, and so did a very unexpected bat.

'Our' bat has appeared at dusk every year now during the spring and summer months, looping and figure-of-eighting around the trees that grow in the back gardens of my road, from dusk till dawn. In fact there are 'bat corridors' between the backs of houses and trees. But there are challenges ahead for these beautiful, tiny animals.