Yarrow can be found in many grasslands, from lawns to meadows, its flat-topped clusters of flower heads appearing from June. Cultivated varieties are garden favourites.

As its name suggests, Himalayan balsam is from the Himalayas and was introduced here in 1839. It now an invasive weed of riverbanks and ditches, where it prevents native species from growing.

The tiny, grey-brown house mouse is one of our most successful mammals. It thrives around buildings but is less likely to be found in our houses these days due to better construction.

A tall plant, Rosebay willowherb is a successful coloniser; it can form dense stands of bright pink flower spikes on disturbed ground, such as woodland clearings, verges and waste ground.

This beautiful bumblebee favours upland areas, but has declined in recent decades and is now nationally scarce.