#2 Top up garden ponds
If you have a garden pond, then you're already providing a great source of drinking and bathing water for birds – as well as for small mammals. Ponds also offer a habitat for many invertebrates, such as dragonflies and damselflies.
Be sure to check the water level in your pond regularly, as shallow ponds in sunny positions can dry up, leaving pond creatures stranded. If you have access to rainwater from a water butt it's best to use this to top up the pond, as this maintains the correct ecological conditions. But tap water is better than nothing if that's all you have – just top up little and often to avoid altering the water quality too much.
If your pond is deep, make sure there's a gently sloping access and exit point for small animals – a few strategically placed stones can help. Although hedgehogs can swim a little, they may drown if they become trapped in a steep-sided pond or trough.