Birds need drinking water, especially seed eating birds who have a particularly dry diet.
As the weather is getting hotter birds also need a regular supply of clean water to bath in to keep their feathers in good condition.
We have a couple of birdbaths in our garden that the birds enjoy. They have plenty of cover around them for protection from the Sparrowhawk.
Last year the Sparrows returned after a few years away. This year they have successfully breed and their young have just fledged, they have been spending a lot of time in the bird bath.
The sparrows drink by dipping their beaks in to the water then tipping their heads back to swallow.